126 lines
3.9 KiB
Python
126 lines
3.9 KiB
Python
import datetime as dt
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import pytest
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import pytz
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import re
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import stix2
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from .constants import FAKE_TIME, MALWARE_ID, MALWARE_KWARGS
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from .fixtures import clock, uuid4, malware # noqa: F401
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EXPECTED_MALWARE = """{
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"created": "2016-05-12T08:17:27Z",
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"id": "malware--fedcba98-7654-3210-fedc-ba9876543210",
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"labels": [
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"ransomware"
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],
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"modified": "2016-05-12T08:17:27Z",
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"name": "Cryptolocker",
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"type": "malware"
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}"""
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def test_malware_with_all_required_fields():
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now = dt.datetime(2016, 5, 12, 8, 17, 27, tzinfo=pytz.utc)
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mal = stix2.Malware(
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type="malware",
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id=MALWARE_ID,
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created=now,
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modified=now,
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labels=["ransomware"],
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name="Cryptolocker",
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)
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assert str(mal) == EXPECTED_MALWARE
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def test_malware_autogenerated_fields(malware): # noqa: F811
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assert malware.type == 'malware'
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assert malware.id == 'malware--00000000-0000-0000-0000-000000000001'
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assert malware.created == FAKE_TIME
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assert malware.modified == FAKE_TIME
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assert malware.labels == ['ransomware']
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assert malware.name == "Cryptolocker"
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assert malware['type'] == 'malware'
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assert malware['id'] == 'malware--00000000-0000-0000-0000-000000000001'
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assert malware['created'] == FAKE_TIME
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assert malware['modified'] == FAKE_TIME
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assert malware['labels'] == ['ransomware']
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assert malware['name'] == "Cryptolocker"
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def test_malware_type_must_be_malware():
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with pytest.raises(ValueError) as excinfo:
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stix2.Malware(type='xxx', **MALWARE_KWARGS)
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assert str(excinfo.value) == "Invalid value for Malware 'type': must equal 'malware'."
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def test_malware_id_must_start_with_malware():
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with pytest.raises(ValueError) as excinfo:
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stix2.Malware(id='my-prefix--', **MALWARE_KWARGS)
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assert str(excinfo.value) == "Invalid value for Malware 'id': must start with 'malware--'."
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def test_malware_required_fields():
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with pytest.raises(ValueError) as excinfo:
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stix2.Malware()
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assert str(excinfo.value) == "Missing required field(s) for Malware: (labels, name)."
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def test_malware_required_field_name():
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with pytest.raises(ValueError) as excinfo:
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stix2.Malware(labels=['ransomware'])
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assert str(excinfo.value) == "Missing required field(s) for Malware: (name)."
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def test_cannot_assign_to_malware_attributes(malware): # noqa: F811
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with pytest.raises(ValueError) as excinfo:
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malware.name = "Cryptolocker II"
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assert str(excinfo.value) == "Cannot modify properties after creation."
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def test_invalid_kwarg_to_malware():
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with pytest.raises(TypeError) as excinfo:
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stix2.Malware(my_custom_property="foo", **MALWARE_KWARGS)
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assert str(excinfo.value) == "unexpected keyword arguments: ['my_custom_property']"
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def test_parse_malware():
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mal = stix2.parse(EXPECTED_MALWARE)
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assert mal.type == 'malware'
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assert mal.id == MALWARE_ID
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assert mal.created == "2016-05-12T08:17:27Z"
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assert mal.modified == "2016-05-12T08:17:27Z"
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assert mal.labels == ['ransomware']
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assert mal.name == "Cryptolocker"
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def test_parse_malware_invalid_labels():
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data = re.compile('\[.+\]', re.DOTALL).sub('1', EXPECTED_MALWARE)
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with pytest.raises(ValueError) as excinfo:
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stix2.parse(data)
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assert "Invalid value for Malware 'labels'" in str(excinfo.value)
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def test_parse_malware_kill_chain_phases():
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kill_chain = """
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"kill_chain_phases": [
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{
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"kill_chain_name": "lockheed-martin-cyber-kill-chain",
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"phase_name": "reconnaissance"
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}
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]"""
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data = EXPECTED_MALWARE.replace('malware"', 'malware",%s' % kill_chain)
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mal = stix2.parse(data)
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assert mal.kill_chain_phases[0].kill_chain_name == "lockheed-martin-cyber-kill-chain"
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assert mal.kill_chain_phases[0].phase_name == "reconnaissance"
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assert mal['kill_chain_phases'][0]['kill_chain_name'] == "lockheed-martin-cyber-kill-chain"
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assert mal['kill_chain_phases'][0]['phase_name'] == "reconnaissance"
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