1232 lines
44 KiB
Python
1232 lines
44 KiB
Python
import datetime as dt
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import re
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import pytest
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import pytz
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import stix2
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from .constants import OBSERVED_DATA_ID
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OBJECTS_REGEX = re.compile('\"objects\": {(?:.*?)(?:(?:[^{]*?)|(?:{[^{]*?}))*}', re.DOTALL)
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EXPECTED = """{
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"type": "observed-data",
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"id": "observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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"created_by_ref": "identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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"created": "2016-04-06T19:58:16.000Z",
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"modified": "2016-04-06T19:58:16.000Z",
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"first_observed": "2015-12-21T19:00:00Z",
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"last_observed": "2015-12-21T19:00:00Z",
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"number_observed": 50,
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"objects": {
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"0": {
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"type": "file",
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"name": "foo.exe"
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}
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}
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}"""
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def test_observed_data_example():
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observed_data = stix2.ObservedData(
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id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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created="2016-04-06T19:58:16.000Z",
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modified="2016-04-06T19:58:16.000Z",
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first_observed="2015-12-21T19:00:00Z",
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last_observed="2015-12-21T19:00:00Z",
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number_observed=50,
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objects={
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"0": {
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"name": "foo.exe",
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"type": "file"
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},
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},
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)
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assert str(observed_data) == EXPECTED
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EXPECTED_WITH_REF = """{
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"type": "observed-data",
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"id": "observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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"created_by_ref": "identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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"created": "2016-04-06T19:58:16.000Z",
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"modified": "2016-04-06T19:58:16.000Z",
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"first_observed": "2015-12-21T19:00:00Z",
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"last_observed": "2015-12-21T19:00:00Z",
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"number_observed": 50,
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"objects": {
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"0": {
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"type": "file",
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"name": "foo.exe"
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},
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"1": {
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"type": "directory",
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"path": "/usr/home",
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"contains_refs": [
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"0"
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]
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}
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}
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}"""
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def test_observed_data_example_with_refs():
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observed_data = stix2.ObservedData(
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id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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created="2016-04-06T19:58:16.000Z",
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modified="2016-04-06T19:58:16.000Z",
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first_observed="2015-12-21T19:00:00Z",
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last_observed="2015-12-21T19:00:00Z",
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number_observed=50,
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objects={
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"0": {
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"name": "foo.exe",
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"type": "file"
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},
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"1": {
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"type": "directory",
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"path": "/usr/home",
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"contains_refs": ["0"]
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}
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},
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)
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assert str(observed_data) == EXPECTED_WITH_REF
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def test_observed_data_example_with_bad_refs():
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with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo:
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stix2.ObservedData(
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id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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created="2016-04-06T19:58:16.000Z",
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modified="2016-04-06T19:58:16.000Z",
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first_observed="2015-12-21T19:00:00Z",
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last_observed="2015-12-21T19:00:00Z",
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number_observed=50,
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objects={
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"0": {
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"type": "file",
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"name": "foo.exe"
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},
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"1": {
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"type": "directory",
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"path": "/usr/home",
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"contains_refs": ["2"]
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}
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},
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)
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assert excinfo.value.cls == stix2.ObservedData
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assert excinfo.value.prop_name == "objects"
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assert excinfo.value.reason == "Invalid object reference for 'Directory:contains_refs': '2' is not a valid object in local scope"
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def test_observed_data_example_with_non_dictionary():
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with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo:
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stix2.ObservedData(
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id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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created="2016-04-06T19:58:16.000Z",
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modified="2016-04-06T19:58:16.000Z",
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first_observed="2015-12-21T19:00:00Z",
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last_observed="2015-12-21T19:00:00Z",
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number_observed=50,
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objects="file: foo.exe",
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)
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assert excinfo.value.cls == stix2.ObservedData
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assert excinfo.value.prop_name == "objects"
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assert 'must contain a dictionary' in excinfo.value.reason
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def test_observed_data_example_with_empty_dictionary():
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with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo:
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stix2.ObservedData(
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id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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created="2016-04-06T19:58:16.000Z",
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modified="2016-04-06T19:58:16.000Z",
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first_observed="2015-12-21T19:00:00Z",
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last_observed="2015-12-21T19:00:00Z",
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number_observed=50,
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objects={},
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)
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assert excinfo.value.cls == stix2.ObservedData
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assert excinfo.value.prop_name == "objects"
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assert 'must contain a non-empty dictionary' in excinfo.value.reason
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@pytest.mark.parametrize("data", [
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EXPECTED,
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{
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"type": "observed-data",
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"id": "observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
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"created": "2016-04-06T19:58:16.000Z",
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"created_by_ref": "identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
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"first_observed": "2015-12-21T19:00:00Z",
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"last_observed": "2015-12-21T19:00:00Z",
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"modified": "2016-04-06T19:58:16.000Z",
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"number_observed": 50,
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"objects": {
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"0": {
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"name": "foo.exe",
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"type": "file"
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}
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}
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},
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])
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def test_parse_observed_data(data):
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odata = stix2.parse(data)
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assert odata.type == 'observed-data'
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assert odata.id == OBSERVED_DATA_ID
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assert odata.created == dt.datetime(2016, 4, 6, 19, 58, 16, tzinfo=pytz.utc)
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assert odata.modified == dt.datetime(2016, 4, 6, 19, 58, 16, tzinfo=pytz.utc)
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assert odata.first_observed == dt.datetime(2015, 12, 21, 19, 0, 0, tzinfo=pytz.utc)
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assert odata.last_observed == dt.datetime(2015, 12, 21, 19, 0, 0, tzinfo=pytz.utc)
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assert odata.created_by_ref == "identity--f431f809-377b-45e0-aa1c-6a4751cae5ff"
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assert odata.objects["0"].type == "file"
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@pytest.mark.parametrize("data", [
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""""0": {
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"type": "artifact",
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"mime_type": "image/jpeg",
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"payload_bin": "VBORw0KGgoAAAANSUhEUgAAADI=="
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}""",
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""""0": {
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"type": "artifact",
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"mime_type": "image/jpeg",
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"url": "https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg",
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"hashes": {
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"MD5": "6826f9a05da08134006557758bb3afbb"
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}
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}""",
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])
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def test_parse_artifact_valid(data):
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odata_str = OBJECTS_REGEX.sub('"objects": { %s }' % data, EXPECTED)
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odata = stix2.parse(odata_str)
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assert odata.objects["0"].type == "artifact"
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@pytest.mark.parametrize("data", [
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""""0": {
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"type": "artifact",
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"mime_type": "image/jpeg",
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"payload_bin": "abcVBORw0KGgoAAAANSUhEUgAAADI=="
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}""",
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""""0": {
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"type": "artifact",
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"mime_type": "image/jpeg",
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"url": "https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg",
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"hashes": {
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"MD5": "a"
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}
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}""",
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])
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def test_parse_artifact_invalid(data):
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odata_str = OBJECTS_REGEX.sub('"objects": { %s }' % data, EXPECTED)
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with pytest.raises(ValueError):
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stix2.parse(odata_str)
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def test_artifact_example_dependency_error():
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with pytest.raises(stix2.exceptions.DependentPropertiesError) as excinfo:
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stix2.Artifact(url="http://example.com/sirvizio.exe")
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assert excinfo.value.dependencies == [("hashes", "url")]
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assert str(excinfo.value) == "The property dependencies for Artifact: (hashes, url) are not met."
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@pytest.mark.parametrize("data", [
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""""0": {
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"type": "autonomous-system",
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"number": 15139,
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"name": "Slime Industries",
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"rir": "ARIN"
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}""",
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])
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def test_parse_autonomous_system_valid(data):
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odata_str = OBJECTS_REGEX.sub('"objects": { %s }' % data, EXPECTED)
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odata = stix2.parse(odata_str)
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assert odata.objects["0"].type == "autonomous-system"
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assert odata.objects["0"].number == 15139
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assert odata.objects["0"].name == "Slime Industries"
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assert odata.objects["0"].rir == "ARIN"
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@pytest.mark.parametrize("data", [
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"""{
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"type": "email-addr",
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"value": "john@example.com",
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"display_name": "John Doe",
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"belongs_to_ref": "0"
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}""",
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])
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def test_parse_email_address(data):
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odata = stix2.parse_observable(data, {"0": "user-account"})
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assert odata.type == "email-addr"
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odata_str = re.compile('"belongs_to_ref": "0"', re.DOTALL).sub('"belongs_to_ref": "3"', data)
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with pytest.raises(stix2.exceptions.InvalidObjRefError):
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stix2.parse_observable(odata_str, {"0": "user-account"})
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@pytest.mark.parametrize("data", [
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"""
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{
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"type": "email-message",
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"is_multipart": true,
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"content_type": "multipart/mixed",
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"date": "2016-06-19T14:20:40.000Z",
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"from_ref": "1",
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"to_refs": [
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"2"
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],
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"cc_refs": [
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"3"
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],
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"subject": "Check out this picture of a cat!",
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"additional_header_fields": {
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"Content-Disposition": "inline",
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"X-Mailer": "Mutt/1.5.23",
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"X-Originating-IP": "198.51.100.3"
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},
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"body_multipart": [
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{
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"content_type": "text/plain; charset=utf-8",
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"content_disposition": "inline",
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"body": "Cats are funny!"
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},
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{
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"content_type": "image/png",
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"content_disposition": "attachment; filename=\\"tabby.png\\"",
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"body_raw_ref": "4"
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},
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{
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"content_type": "application/zip",
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"content_disposition": "attachment; filename=\\"tabby_pics.zip\\"",
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"body_raw_ref": "5"
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}
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]
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}
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"""
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])
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def test_parse_email_message(data):
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valid_refs = {
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"0": "email-message",
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"1": "email-addr",
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"2": "email-addr",
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"3": "email-addr",
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"4": "artifact",
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"5": "file",
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}
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odata = stix2.parse_observable(data, valid_refs)
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assert odata.type == "email-message"
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assert odata.body_multipart[0].content_disposition == "inline"
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@pytest.mark.parametrize("data", [
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"""
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{
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"type": "email-message",
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"from_ref": "0",
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"to_refs": ["1"],
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"is_multipart": true,
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"date": "1997-11-21T15:55:06.000Z",
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"subject": "Saying Hello",
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"body": "Cats are funny!"
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}
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"""
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])
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def test_parse_email_message_not_multipart(data):
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valid_refs = {
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"0": "email-addr",
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"1": "email-addr",
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}
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with pytest.raises(stix2.exceptions.DependentPropertiesError) as excinfo:
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stix2.parse_observable(data, valid_refs)
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assert excinfo.value.cls == stix2.EmailMessage
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assert excinfo.value.dependencies == [("is_multipart", "body")]
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@pytest.mark.parametrize("data", [
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""""0": {
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"type": "file",
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"hashes": {
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"SHA-256": "ceafbfd424be2ca4a5f0402cae090dda2fb0526cf521b60b60077c0f622b285a"
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}
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},
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"1": {
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"type": "file",
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"hashes": {
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"SHA-256": "19c549ec2628b989382f6b280cbd7bb836a0b461332c0fe53511ce7d584b89d3"
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}
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},
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"2": {
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"type": "file",
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"hashes": {
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"SHA-256": "0969de02ecf8a5f003e3f6d063d848c8a193aada092623f8ce408c15bcb5f038"
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}
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},
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"3": {
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"type": "file",
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"name": "foo.zip",
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"hashes": {
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"SHA-256": "35a01331e9ad96f751278b891b6ea09699806faedfa237d40513d92ad1b7100f"
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},
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"mime_type": "application/zip",
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"extensions": {
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"archive-ext": {
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"contains_refs": [
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"0",
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"1",
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"2"
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],
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"version": "5.0"
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}
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}
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}""",
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])
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def test_parse_file_archive(data):
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odata_str = OBJECTS_REGEX.sub('"objects": { %s }' % data, EXPECTED)
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odata = stix2.parse(odata_str)
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assert odata.objects["3"].extensions['archive-ext'].version == "5.0"
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@pytest.mark.parametrize("data", [
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"""
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{
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"type": "email-message",
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"is_multipart": true,
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"content_type": "multipart/mixed",
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"date": "2016-06-19T14:20:40.000Z",
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"from_ref": "1",
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"to_refs": [
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"2"
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],
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"cc_refs": [
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"3"
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],
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"subject": "Check out this picture of a cat!",
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"additional_header_fields": {
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"Content-Disposition": "inline",
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"X-Mailer": "Mutt/1.5.23",
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"X-Originating-IP": "198.51.100.3"
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},
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"body_multipart": [
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{
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"content_type": "text/plain; charset=utf-8",
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"content_disposition": "inline",
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"body": "Cats are funny!"
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},
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{
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"content_type": "image/png",
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"content_disposition": "attachment; filename=\\"tabby.png\\""
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},
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{
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"content_type": "application/zip",
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"content_disposition": "attachment; filename=\\"tabby_pics.zip\\"",
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"body_raw_ref": "5"
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}
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]
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}
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"""
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])
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def test_parse_email_message_with_at_least_one_error(data):
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valid_refs = {
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"0": "email-message",
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"1": "email-addr",
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"2": "email-addr",
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"3": "email-addr",
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"4": "artifact",
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"5": "file",
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}
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with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
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stix2.parse_observable(data, valid_refs)
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assert excinfo.value.cls == stix2.EmailMIMEComponent
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assert excinfo.value.properties == ["body", "body_raw_ref"]
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assert "At least one of the" in str(excinfo.value)
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assert "must be populated" in str(excinfo.value)
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@pytest.mark.parametrize("data", [
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"""
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{
|
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"type": "network-traffic",
|
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"src_ref": "0",
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"dst_ref": "1",
|
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"protocols": [
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"tcp"
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]
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}
|
|
"""
|
|
])
|
|
def test_parse_basic_tcp_traffic(data):
|
|
odata = stix2.parse_observable(data, {"0": "ipv4-addr", "1": "ipv4-addr"})
|
|
|
|
assert odata.type == "network-traffic"
|
|
assert odata.src_ref == "0"
|
|
assert odata.dst_ref == "1"
|
|
assert odata.protocols == ["tcp"]
|
|
|
|
|
|
@pytest.mark.parametrize("data", [
|
|
"""
|
|
{
|
|
"type": "network-traffic",
|
|
"src_port": 2487,
|
|
"dst_port": 1723,
|
|
"protocols": [
|
|
"ipv4",
|
|
"pptp"
|
|
],
|
|
"src_byte_count": 35779,
|
|
"dst_byte_count": 935750,
|
|
"encapsulates_refs": [
|
|
"4"
|
|
]
|
|
}
|
|
"""
|
|
])
|
|
def test_parse_basic_tcp_traffic_with_error(data):
|
|
with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
|
|
stix2.parse_observable(data, {"4": "network-traffic"})
|
|
|
|
assert excinfo.value.cls == stix2.NetworkTraffic
|
|
assert excinfo.value.properties == ["dst_ref", "src_ref"]
|
|
|
|
|
|
EXPECTED_PROCESS_OD = """{
|
|
"created": "2016-04-06T19:58:16.000Z",
|
|
"created_by_ref": "identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
|
|
"first_observed": "2015-12-21T19:00:00Z",
|
|
"id": "observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
|
|
"last_observed": "2015-12-21T19:00:00Z",
|
|
"modified": "2016-04-06T19:58:16.000Z",
|
|
"number_observed": 50,
|
|
"objects": {
|
|
"0": {
|
|
"type": "file",
|
|
"hashes": {
|
|
"SHA-256": "35a01331e9ad96f751278b891b6ea09699806faedfa237d40513d92ad1b7100fSHA"
|
|
},
|
|
},
|
|
"1": {
|
|
"type": "process",
|
|
"pid": 1221,
|
|
"name": "gedit-bin",
|
|
"created": "2016-01-20T14:11:25.55Z",
|
|
"arguments" :[
|
|
"--new-window"
|
|
],
|
|
"binary_ref": "0"
|
|
}
|
|
},
|
|
"type": "observed-data"
|
|
}"""
|
|
|
|
|
|
def test_observed_data_with_process_example():
|
|
observed_data = stix2.ObservedData(
|
|
id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
|
|
created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
|
|
created="2016-04-06T19:58:16.000Z",
|
|
modified="2016-04-06T19:58:16.000Z",
|
|
first_observed="2015-12-21T19:00:00Z",
|
|
last_observed="2015-12-21T19:00:00Z",
|
|
number_observed=50,
|
|
objects={
|
|
"0": {
|
|
"type": "file",
|
|
"hashes": {
|
|
"SHA-256": "35a01331e9ad96f751278b891b6ea09699806faedfa237d40513d92ad1b7100f"
|
|
},
|
|
},
|
|
"1": {
|
|
"type": "process",
|
|
"pid": 1221,
|
|
"name": "gedit-bin",
|
|
"created": "2016-01-20T14:11:25.55Z",
|
|
"arguments": [
|
|
"--new-window"
|
|
],
|
|
"binary_ref": "0"
|
|
}
|
|
})
|
|
|
|
assert observed_data.objects["0"].type == "file"
|
|
assert observed_data.objects["0"].hashes["SHA-256"] == "35a01331e9ad96f751278b891b6ea09699806faedfa237d40513d92ad1b7100f"
|
|
assert observed_data.objects["1"].type == "process"
|
|
assert observed_data.objects["1"].pid == 1221
|
|
assert observed_data.objects["1"].name == "gedit-bin"
|
|
assert observed_data.objects["1"].arguments[0] == "--new-window"
|
|
|
|
|
|
# creating cyber observables directly
|
|
|
|
def test_artifact_example():
|
|
art = stix2.Artifact(mime_type="image/jpeg",
|
|
url="https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg",
|
|
hashes={
|
|
"MD5": "6826f9a05da08134006557758bb3afbb"
|
|
})
|
|
assert art.mime_type == "image/jpeg"
|
|
assert art.url == "https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg"
|
|
assert art.hashes["MD5"] == "6826f9a05da08134006557758bb3afbb"
|
|
|
|
|
|
def test_artifact_mutual_exclusion_error():
|
|
with pytest.raises(stix2.exceptions.MutuallyExclusivePropertiesError) as excinfo:
|
|
stix2.Artifact(mime_type="image/jpeg",
|
|
url="https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg",
|
|
hashes={
|
|
"MD5": "6826f9a05da08134006557758bb3afbb"
|
|
},
|
|
payload_bin="VBORw0KGgoAAAANSUhEUgAAADI==")
|
|
|
|
assert excinfo.value.cls == stix2.Artifact
|
|
assert excinfo.value.properties == ["payload_bin", "url"]
|
|
assert 'are mutually exclusive' in str(excinfo.value)
|
|
|
|
|
|
def test_directory_example():
|
|
dir = stix2.Directory(_valid_refs={"1": "file"},
|
|
path='/usr/lib',
|
|
created="2015-12-21T19:00:00Z",
|
|
modified="2015-12-24T19:00:00Z",
|
|
accessed="2015-12-21T20:00:00Z",
|
|
contains_refs=["1"])
|
|
|
|
assert dir.path == '/usr/lib'
|
|
assert dir.created == dt.datetime(2015, 12, 21, 19, 0, 0, tzinfo=pytz.utc)
|
|
assert dir.modified == dt.datetime(2015, 12, 24, 19, 0, 0, tzinfo=pytz.utc)
|
|
assert dir.accessed == dt.datetime(2015, 12, 21, 20, 0, 0, tzinfo=pytz.utc)
|
|
assert dir.contains_refs == ["1"]
|
|
|
|
|
|
def test_directory_example_ref_error():
|
|
with pytest.raises(stix2.exceptions.InvalidObjRefError) as excinfo:
|
|
stix2.Directory(_valid_refs=[],
|
|
path='/usr/lib',
|
|
created="2015-12-21T19:00:00Z",
|
|
modified="2015-12-24T19:00:00Z",
|
|
accessed="2015-12-21T20:00:00Z",
|
|
contains_refs=["1"])
|
|
|
|
assert excinfo.value.cls == stix2.Directory
|
|
assert excinfo.value.prop_name == "contains_refs"
|
|
|
|
|
|
def test_domain_name_example():
|
|
dn = stix2.DomainName(_valid_refs={"1": 'domain-name'},
|
|
value="example.com",
|
|
resolves_to_refs=["1"])
|
|
|
|
assert dn.value == "example.com"
|
|
assert dn.resolves_to_refs == ["1"]
|
|
|
|
|
|
def test_domain_name_example_invalid_ref_type():
|
|
with pytest.raises(stix2.exceptions.InvalidObjRefError) as excinfo:
|
|
stix2.DomainName(_valid_refs={"1": "file"},
|
|
value="example.com",
|
|
resolves_to_refs=["1"])
|
|
|
|
assert excinfo.value.cls == stix2.DomainName
|
|
assert excinfo.value.prop_name == "resolves_to_refs"
|
|
|
|
|
|
def test_file_example():
|
|
f = stix2.File(name="qwerty.dll",
|
|
hashes={
|
|
"SHA-256": "ceafbfd424be2ca4a5f0402cae090dda2fb0526cf521b60b60077c0f622b285a"},
|
|
size=100,
|
|
magic_number_hex="1C",
|
|
mime_type="application/msword",
|
|
created="2016-12-21T19:00:00Z",
|
|
modified="2016-12-24T19:00:00Z",
|
|
accessed="2016-12-21T20:00:00Z",
|
|
is_encrypted=True,
|
|
encryption_algorithm="AES128-CBC",
|
|
decryption_key="fred"
|
|
)
|
|
|
|
assert f.name == "qwerty.dll"
|
|
assert f.size == 100
|
|
assert f.magic_number_hex == "1C"
|
|
assert f.hashes["SHA-256"] == "ceafbfd424be2ca4a5f0402cae090dda2fb0526cf521b60b60077c0f622b285a"
|
|
assert f.mime_type == "application/msword"
|
|
assert f.created == dt.datetime(2016, 12, 21, 19, 0, 0, tzinfo=pytz.utc)
|
|
assert f.modified == dt.datetime(2016, 12, 24, 19, 0, 0, tzinfo=pytz.utc)
|
|
assert f.accessed == dt.datetime(2016, 12, 21, 20, 0, 0, tzinfo=pytz.utc)
|
|
assert f.is_encrypted
|
|
assert f.encryption_algorithm == "AES128-CBC"
|
|
assert f.decryption_key == "fred" # does the key have a format we can test for?
|
|
|
|
|
|
def test_file_example_with_NTFSExt():
|
|
f = stix2.File(name="abc.txt",
|
|
extensions={
|
|
"ntfs-ext": {
|
|
"alternate_data_streams": [
|
|
{
|
|
"name": "second.stream",
|
|
"size": 25536
|
|
}
|
|
]
|
|
}
|
|
})
|
|
|
|
assert f.name == "abc.txt"
|
|
assert f.extensions["ntfs-ext"].alternate_data_streams[0].size == 25536
|
|
|
|
|
|
def test_file_example_with_empty_NTFSExt():
|
|
with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
|
|
stix2.File(name="abc.txt",
|
|
extensions={
|
|
"ntfs-ext": {
|
|
}
|
|
})
|
|
|
|
assert excinfo.value.cls == stix2.NTFSExt
|
|
assert excinfo.value.properties == sorted(list(stix2.NTFSExt._properties.keys()))
|
|
|
|
|
|
def test_file_example_with_PDFExt():
|
|
f = stix2.File(name="qwerty.dll",
|
|
extensions={
|
|
"pdf-ext": {
|
|
"version": "1.7",
|
|
"document_info_dict": {
|
|
"Title": "Sample document",
|
|
"Author": "Adobe Systems Incorporated",
|
|
"Creator": "Adobe FrameMaker 5.5.3 for Power Macintosh",
|
|
"Producer": "Acrobat Distiller 3.01 for Power Macintosh",
|
|
"CreationDate": "20070412090123-02"
|
|
},
|
|
"pdfid0": "DFCE52BD827ECF765649852119D",
|
|
"pdfid1": "57A1E0F9ED2AE523E313C"
|
|
}
|
|
})
|
|
|
|
assert f.name == "qwerty.dll"
|
|
assert f.extensions["pdf-ext"].version == "1.7"
|
|
assert f.extensions["pdf-ext"].document_info_dict["Title"] == "Sample document"
|
|
|
|
|
|
def test_file_example_with_PDFExt_Object():
|
|
f = stix2.File(name="qwerty.dll",
|
|
extensions={
|
|
"pdf-ext":
|
|
stix2.PDFExt(version="1.7",
|
|
document_info_dict={
|
|
"Title": "Sample document",
|
|
"Author": "Adobe Systems Incorporated",
|
|
"Creator": "Adobe FrameMaker 5.5.3 for Power Macintosh",
|
|
"Producer": "Acrobat Distiller 3.01 for Power Macintosh",
|
|
"CreationDate": "20070412090123-02"
|
|
},
|
|
pdfid0="DFCE52BD827ECF765649852119D",
|
|
pdfid1="57A1E0F9ED2AE523E313C")
|
|
|
|
})
|
|
|
|
assert f.name == "qwerty.dll"
|
|
assert f.extensions["pdf-ext"].version == "1.7"
|
|
assert f.extensions["pdf-ext"].document_info_dict["Title"] == "Sample document"
|
|
|
|
|
|
def test_file_example_with_RasterImageExt_Object():
|
|
f = stix2.File(name="qwerty.jpeg",
|
|
extensions={
|
|
"raster-image-ext": {
|
|
"bits_per_pixel": 123,
|
|
"exif_tags": {
|
|
"Make": "Nikon",
|
|
"Model": "D7000",
|
|
"XResolution": 4928,
|
|
"YResolution": 3264
|
|
}
|
|
}
|
|
})
|
|
assert f.name == "qwerty.jpeg"
|
|
assert f.extensions["raster-image-ext"].bits_per_pixel == 123
|
|
assert f.extensions["raster-image-ext"].exif_tags["XResolution"] == 4928
|
|
|
|
|
|
RASTER_IMAGE_EXT = """{
|
|
"type": "observed-data",
|
|
"id": "observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
|
|
"created": "2016-04-06T19:58:16.000Z",
|
|
"modified": "2016-04-06T19:58:16.000Z",
|
|
"first_observed": "2015-12-21T19:00:00Z",
|
|
"last_observed": "2015-12-21T19:00:00Z",
|
|
"number_observed": 1,
|
|
"objects": {
|
|
"0": {
|
|
"type": "file",
|
|
"name": "picture.jpg",
|
|
"hashes": {
|
|
"SHA-256": "35a01331e9ad96f751278b891b6ea09699806faedfa237d40513d92ad1b7100f"
|
|
},
|
|
"extensions": {
|
|
"raster-image-ext": {
|
|
"image_height": 768,
|
|
"image_width": 1024,
|
|
"bits_per_pixel": 72,
|
|
"image_compression_algorithm": "JPEG",
|
|
"exif_tags": {
|
|
"Make": "Nikon",
|
|
"Model": "D7000",
|
|
"XResolution": 4928,
|
|
"YResolution": 3264
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
|
|
def test_raster_image_ext_parse():
|
|
obj = stix2.parse(RASTER_IMAGE_EXT)
|
|
assert obj.objects["0"].extensions['raster-image-ext'].image_width == 1024
|
|
|
|
|
|
def test_raster_images_ext_create():
|
|
ext = stix2.RasterImageExt(image_width=1024)
|
|
assert "image_width" in str(ext)
|
|
|
|
|
|
def test_file_example_with_WindowsPEBinaryExt():
|
|
f = stix2.File(name="qwerty.dll",
|
|
extensions={
|
|
"windows-pebinary-ext": {
|
|
"pe_type": "exe",
|
|
"machine_hex": "014c",
|
|
"number_of_sections": 4,
|
|
"time_date_stamp": "2016-01-22T12:31:12Z",
|
|
"pointer_to_symbol_table_hex": "74726144",
|
|
"number_of_symbols": 4542568,
|
|
"size_of_optional_header": 224,
|
|
"characteristics_hex": "818f",
|
|
"optional_header": {
|
|
"magic_hex": "010b",
|
|
"major_linker_version": 2,
|
|
"minor_linker_version": 25,
|
|
"size_of_code": 512,
|
|
"size_of_initialized_data": 283648,
|
|
"size_of_uninitialized_data": 0,
|
|
"address_of_entry_point": 4096,
|
|
"base_of_code": 4096,
|
|
"base_of_data": 8192,
|
|
"image_base": 14548992,
|
|
"section_alignment": 4096,
|
|
"file_alignment": 4096,
|
|
"major_os_version": 1,
|
|
"minor_os_version": 0,
|
|
"major_image_version": 0,
|
|
"minor_image_version": 0,
|
|
"major_subsystem_version": 4,
|
|
"minor_subsystem_version": 0,
|
|
"win32_version_value_hex": "00",
|
|
"size_of_image": 299008,
|
|
"size_of_headers": 4096,
|
|
"checksum_hex": "00",
|
|
"subsystem_hex": "03",
|
|
"dll_characteristics_hex": "00",
|
|
"size_of_stack_reserve": 100000,
|
|
"size_of_stack_commit": 8192,
|
|
"size_of_heap_reserve": 100000,
|
|
"size_of_heap_commit": 4096,
|
|
"loader_flags_hex": "abdbffde",
|
|
"number_of_rva_and_sizes": 3758087646
|
|
},
|
|
"sections": [
|
|
{
|
|
"name": "CODE",
|
|
"entropy": 0.061089
|
|
},
|
|
{
|
|
"name": "DATA",
|
|
"entropy": 7.980693
|
|
},
|
|
{
|
|
"name": "NicolasB",
|
|
"entropy": 0.607433
|
|
},
|
|
{
|
|
"name": ".idata",
|
|
"entropy": 0.607433
|
|
}
|
|
]
|
|
}
|
|
|
|
})
|
|
assert f.name == "qwerty.dll"
|
|
assert f.extensions["windows-pebinary-ext"].sections[2].entropy == 0.607433
|
|
|
|
|
|
def test_file_example_encryption_error():
|
|
with pytest.raises(stix2.exceptions.DependentPropertiesError) as excinfo:
|
|
stix2.File(name="qwerty.dll",
|
|
is_encrypted=False,
|
|
encryption_algorithm="AES128-CBC")
|
|
|
|
assert excinfo.value.cls == stix2.File
|
|
assert excinfo.value.dependencies == [("is_encrypted", "encryption_algorithm")]
|
|
assert "property dependencies" in str(excinfo.value)
|
|
assert "are not met" in str(excinfo.value)
|
|
|
|
with pytest.raises(stix2.exceptions.DependentPropertiesError) as excinfo:
|
|
stix2.File(name="qwerty.dll",
|
|
encryption_algorithm="AES128-CBC")
|
|
|
|
|
|
def test_ip4_address_example():
|
|
ip4 = stix2.IPv4Address(_valid_refs={"4": "mac-addr", "5": "mac-addr"},
|
|
value="198.51.100.3",
|
|
resolves_to_refs=["4", "5"])
|
|
|
|
assert ip4.value == "198.51.100.3"
|
|
assert ip4.resolves_to_refs == ["4", "5"]
|
|
|
|
|
|
def test_ip4_address_example_cidr():
|
|
ip4 = stix2.IPv4Address(value="198.51.100.0/24")
|
|
|
|
assert ip4.value == "198.51.100.0/24"
|
|
|
|
|
|
def test_ip6_address_example():
|
|
ip6 = stix2.IPv6Address(value="2001:0db8:85a3:0000:0000:8a2e:0370:7334")
|
|
|
|
assert ip6.value == "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
|
|
|
|
|
|
def test_mac_address_example():
|
|
ip6 = stix2.MACAddress(value="d2:fb:49:24:37:18")
|
|
|
|
assert ip6.value == "d2:fb:49:24:37:18"
|
|
|
|
|
|
def test_network_traffic_example():
|
|
nt = stix2.NetworkTraffic(_valid_refs={"0": "ipv4-addr", "1": "ipv4-addr"},
|
|
protocols="tcp",
|
|
src_ref="0",
|
|
dst_ref="1")
|
|
assert nt.protocols == ["tcp"]
|
|
assert nt.src_ref == "0"
|
|
assert nt.dst_ref == "1"
|
|
|
|
|
|
def test_network_traffic_http_request_example():
|
|
h = stix2.HTTPRequestExt(request_method="get",
|
|
request_value="/download.html",
|
|
request_version="http/1.1",
|
|
request_header={
|
|
"Accept-Encoding": "gzip,deflate",
|
|
"User-Agent": "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113",
|
|
"Host": "www.example.com"
|
|
})
|
|
nt = stix2.NetworkTraffic(_valid_refs={"0": "ipv4-addr"},
|
|
protocols="tcp",
|
|
src_ref="0",
|
|
extensions={'http-request-ext': h})
|
|
assert nt.extensions['http-request-ext'].request_method == "get"
|
|
assert nt.extensions['http-request-ext'].request_value == "/download.html"
|
|
assert nt.extensions['http-request-ext'].request_version == "http/1.1"
|
|
assert nt.extensions['http-request-ext'].request_header['Accept-Encoding'] == "gzip,deflate"
|
|
assert nt.extensions['http-request-ext'].request_header['User-Agent'] == "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113"
|
|
assert nt.extensions['http-request-ext'].request_header['Host'] == "www.example.com"
|
|
|
|
|
|
def test_network_traffic_icmp_example():
|
|
h = stix2.ICMPExt(icmp_type_hex="08",
|
|
icmp_code_hex="00")
|
|
nt = stix2.NetworkTraffic(_valid_refs={"0": "ipv4-addr"},
|
|
protocols="tcp",
|
|
src_ref="0",
|
|
extensions={'icmp-ext': h})
|
|
assert nt.extensions['icmp-ext'].icmp_type_hex == "08"
|
|
assert nt.extensions['icmp-ext'].icmp_code_hex == "00"
|
|
|
|
|
|
def test_network_traffic_socket_example():
|
|
h = stix2.SocketExt(is_listening=True,
|
|
address_family="AF_INET",
|
|
protocol_family="PF_INET",
|
|
socket_type="SOCK_STREAM")
|
|
nt = stix2.NetworkTraffic(_valid_refs={"0": "ipv4-addr"},
|
|
protocols="tcp",
|
|
src_ref="0",
|
|
extensions={'socket-ext': h})
|
|
assert nt.extensions['socket-ext'].is_listening
|
|
assert nt.extensions['socket-ext'].address_family == "AF_INET"
|
|
assert nt.extensions['socket-ext'].protocol_family == "PF_INET"
|
|
assert nt.extensions['socket-ext'].socket_type == "SOCK_STREAM"
|
|
|
|
|
|
def test_network_traffic_tcp_example():
|
|
h = stix2.TCPExt(src_flags_hex="00000002")
|
|
nt = stix2.NetworkTraffic(_valid_refs={"0": "ipv4-addr"},
|
|
protocols="tcp",
|
|
src_ref="0",
|
|
extensions={'tcp-ext': h})
|
|
assert nt.extensions['tcp-ext'].src_flags_hex == "00000002"
|
|
|
|
|
|
def test_mutex_example():
|
|
m = stix2.Mutex(name="barney")
|
|
|
|
assert m.name == "barney"
|
|
|
|
|
|
def test_process_example():
|
|
p = stix2.Process(_valid_refs={"0": "file"},
|
|
pid=1221,
|
|
name="gedit-bin",
|
|
created="2016-01-20T14:11:25.55Z",
|
|
arguments=["--new-window"],
|
|
binary_ref="0")
|
|
|
|
assert p.name == "gedit-bin"
|
|
assert p.arguments == ["--new-window"]
|
|
|
|
|
|
def test_process_example_empty_error():
|
|
with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
|
|
stix2.Process()
|
|
|
|
assert excinfo.value.cls == stix2.Process
|
|
properties_of_process = list(stix2.Process._properties.keys())
|
|
properties_of_process.remove("type")
|
|
assert excinfo.value.properties == sorted(properties_of_process)
|
|
msg = "At least one of the ({1}) properties for {0} must be populated."
|
|
msg = msg.format(stix2.Process.__name__,
|
|
", ".join(sorted(properties_of_process)))
|
|
assert str(excinfo.value) == msg
|
|
|
|
|
|
def test_process_example_empty_with_extensions():
|
|
with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
|
|
stix2.Process(extensions={
|
|
"windows-process-ext": {}
|
|
})
|
|
|
|
assert excinfo.value.cls == stix2.WindowsProcessExt
|
|
properties_of_extension = list(stix2.WindowsProcessExt._properties.keys())
|
|
assert excinfo.value.properties == sorted(properties_of_extension)
|
|
|
|
|
|
def test_process_example_windows_process_ext():
|
|
proc = stix2.Process(pid=314,
|
|
name="foobar.exe",
|
|
extensions={
|
|
"windows-process-ext": {
|
|
"aslr_enabled": True,
|
|
"dep_enabled": True,
|
|
"priority": "HIGH_PRIORITY_CLASS",
|
|
"owner_sid": "S-1-5-21-186985262-1144665072-74031268-1309"
|
|
}
|
|
})
|
|
assert proc.extensions["windows-process-ext"].aslr_enabled
|
|
assert proc.extensions["windows-process-ext"].dep_enabled
|
|
assert proc.extensions["windows-process-ext"].priority == "HIGH_PRIORITY_CLASS"
|
|
assert proc.extensions["windows-process-ext"].owner_sid == "S-1-5-21-186985262-1144665072-74031268-1309"
|
|
|
|
|
|
def test_process_example_windows_process_ext_empty():
|
|
with pytest.raises(stix2.exceptions.AtLeastOnePropertyError) as excinfo:
|
|
stix2.Process(pid=1221,
|
|
name="gedit-bin",
|
|
extensions={
|
|
"windows-process-ext": {}
|
|
})
|
|
|
|
assert excinfo.value.cls == stix2.WindowsProcessExt
|
|
properties_of_extension = list(stix2.WindowsProcessExt._properties.keys())
|
|
assert excinfo.value.properties == sorted(properties_of_extension)
|
|
|
|
|
|
def test_process_example_extensions_empty():
|
|
with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo:
|
|
stix2.Process(extensions={})
|
|
|
|
assert excinfo.value.cls == stix2.Process
|
|
assert excinfo.value.prop_name == 'extensions'
|
|
assert 'non-empty dictionary' in excinfo.value.reason
|
|
|
|
|
|
def test_process_example_with_WindowsProcessExt_Object():
|
|
p = stix2.Process(extensions={
|
|
"windows-process-ext": stix2.WindowsProcessExt(aslr_enabled=True,
|
|
dep_enabled=True,
|
|
priority="HIGH_PRIORITY_CLASS",
|
|
owner_sid="S-1-5-21-186985262-1144665072-74031268-1309") # noqa
|
|
})
|
|
|
|
assert p.extensions["windows-process-ext"].dep_enabled
|
|
assert p.extensions["windows-process-ext"].owner_sid == "S-1-5-21-186985262-1144665072-74031268-1309"
|
|
|
|
|
|
def test_process_example_with_WindowsServiceExt():
|
|
p = stix2.Process(extensions={
|
|
"windows-service-ext": {
|
|
"service_name": "sirvizio",
|
|
"display_name": "Sirvizio",
|
|
"start_type": "SERVICE_AUTO_START",
|
|
"service_type": "SERVICE_WIN32_OWN_PROCESS",
|
|
"service_status": "SERVICE_RUNNING"
|
|
}
|
|
})
|
|
|
|
assert p.extensions["windows-service-ext"].service_name == "sirvizio"
|
|
assert p.extensions["windows-service-ext"].service_type == "SERVICE_WIN32_OWN_PROCESS"
|
|
|
|
|
|
def test_process_example_with_WindowsProcessServiceExt():
|
|
p = stix2.Process(extensions={
|
|
"windows-service-ext": {
|
|
"service_name": "sirvizio",
|
|
"display_name": "Sirvizio",
|
|
"start_type": "SERVICE_AUTO_START",
|
|
"service_type": "SERVICE_WIN32_OWN_PROCESS",
|
|
"service_status": "SERVICE_RUNNING"
|
|
},
|
|
"windows-process-ext": {
|
|
"aslr_enabled": True,
|
|
"dep_enabled": True,
|
|
"priority": "HIGH_PRIORITY_CLASS",
|
|
"owner_sid": "S-1-5-21-186985262-1144665072-74031268-1309"
|
|
}
|
|
})
|
|
|
|
assert p.extensions["windows-service-ext"].service_name == "sirvizio"
|
|
assert p.extensions["windows-service-ext"].service_type == "SERVICE_WIN32_OWN_PROCESS"
|
|
assert p.extensions["windows-process-ext"].dep_enabled
|
|
assert p.extensions["windows-process-ext"].owner_sid == "S-1-5-21-186985262-1144665072-74031268-1309"
|
|
|
|
|
|
def test_software_example():
|
|
s = stix2.Software(name="Word",
|
|
cpe="cpe:2.3:a:microsoft:word:2000:*:*:*:*:*:*:*",
|
|
version="2002",
|
|
vendor="Microsoft")
|
|
|
|
assert s.name == "Word"
|
|
assert s.cpe == "cpe:2.3:a:microsoft:word:2000:*:*:*:*:*:*:*"
|
|
assert s.version == "2002"
|
|
assert s.vendor == "Microsoft"
|
|
|
|
|
|
def test_url_example():
|
|
s = stix2.URL(value="https://example.com/research/index.html")
|
|
|
|
assert s.type == "url"
|
|
assert s.value == "https://example.com/research/index.html"
|
|
|
|
|
|
def test_user_account_example():
|
|
a = stix2.UserAccount(user_id="1001",
|
|
account_login="jdoe",
|
|
account_type="unix",
|
|
display_name="John Doe",
|
|
is_service_account=False,
|
|
is_privileged=False,
|
|
can_escalate_privs=True,
|
|
account_created="2016-01-20T12:31:12Z",
|
|
password_last_changed="2016-01-20T14:27:43Z",
|
|
account_first_login="2016-01-20T14:26:07Z",
|
|
account_last_login="2016-07-22T16:08:28Z")
|
|
|
|
assert a.user_id == "1001"
|
|
assert a.account_login == "jdoe"
|
|
assert a.account_type == "unix"
|
|
assert a.display_name == "John Doe"
|
|
assert not a.is_service_account
|
|
assert not a.is_privileged
|
|
assert a.can_escalate_privs
|
|
assert a.account_created == dt.datetime(2016, 1, 20, 12, 31, 12, tzinfo=pytz.utc)
|
|
assert a.password_last_changed == dt.datetime(2016, 1, 20, 14, 27, 43, tzinfo=pytz.utc)
|
|
assert a.account_first_login == dt.datetime(2016, 1, 20, 14, 26, 7, tzinfo=pytz.utc)
|
|
assert a.account_last_login == dt.datetime(2016, 7, 22, 16, 8, 28, tzinfo=pytz.utc)
|
|
|
|
|
|
def test_user_account_unix_account_ext_example():
|
|
u = stix2.UNIXAccountExt(gid=1001,
|
|
groups=["wheel"],
|
|
home_dir="/home/jdoe",
|
|
shell="/bin/bash")
|
|
a = stix2.UserAccount(user_id="1001",
|
|
account_login="jdoe",
|
|
account_type="unix",
|
|
extensions={'unix-account-ext': u})
|
|
assert a.extensions['unix-account-ext'].gid == 1001
|
|
assert a.extensions['unix-account-ext'].groups == ["wheel"]
|
|
assert a.extensions['unix-account-ext'].home_dir == "/home/jdoe"
|
|
assert a.extensions['unix-account-ext'].shell == "/bin/bash"
|
|
|
|
|
|
def test_windows_registry_key_example():
|
|
with pytest.raises(ValueError):
|
|
v = stix2.WindowsRegistryValueType(name="Foo",
|
|
data="qwerty",
|
|
data_type="string")
|
|
|
|
v = stix2.WindowsRegistryValueType(name="Foo",
|
|
data="qwerty",
|
|
data_type="REG_SZ")
|
|
w = stix2.WindowsRegistryKey(key="hkey_local_machine\\system\\bar\\foo",
|
|
values=[v])
|
|
assert w.key == "hkey_local_machine\\system\\bar\\foo"
|
|
assert w.values[0].name == "Foo"
|
|
assert w.values[0].data == "qwerty"
|
|
assert w.values[0].data_type == "REG_SZ"
|
|
|
|
|
|
def test_x509_certificate_example():
|
|
x509 = stix2.X509Certificate(
|
|
issuer="C=ZA, ST=Western Cape, L=Cape Town, O=Thawte Consulting cc, OU=Certification Services Division, CN=Thawte Server CA/emailAddress=server-certs@thawte.com", # noqa
|
|
validity_not_before="2016-03-12T12:00:00Z",
|
|
validity_not_after="2016-08-21T12:00:00Z",
|
|
subject="C=US, ST=Maryland, L=Pasadena, O=Brent Baccala, OU=FreeSoft, CN=www.freesoft.org/emailAddress=baccala@freesoft.org") # noqa
|
|
|
|
assert x509.type == "x509-certificate"
|
|
assert x509.issuer == "C=ZA, ST=Western Cape, L=Cape Town, O=Thawte Consulting cc, OU=Certification Services Division, CN=Thawte Server CA/emailAddress=server-certs@thawte.com" # noqa
|
|
assert x509.subject == "C=US, ST=Maryland, L=Pasadena, O=Brent Baccala, OU=FreeSoft, CN=www.freesoft.org/emailAddress=baccala@freesoft.org" # noqa
|
|
|
|
|
|
def test_new_version_with_related_objects():
|
|
data = stix2.ObservedData(
|
|
first_observed="2016-03-12T12:00:00Z",
|
|
last_observed="2016-03-12T12:00:00Z",
|
|
number_observed=1,
|
|
objects={
|
|
'src_ip': {
|
|
'type': 'ipv4-addr',
|
|
'value': '127.0.0.1/32'
|
|
},
|
|
'domain': {
|
|
'type': 'domain-name',
|
|
'value': 'example.com',
|
|
'resolves_to_refs': ['src_ip']
|
|
}
|
|
}
|
|
)
|
|
new_version = data.new_version(last_observed="2017-12-12T12:00:00Z")
|
|
assert new_version.last_observed.year == 2017
|
|
assert new_version.objects['domain'].resolves_to_refs[0] == 'src_ip'
|