cti-python-stix2/stix2/test/v21/test_environment.py

376 lines
13 KiB
Python

import pytest
import stix2
from .constants import (
CAMPAIGN_ID, CAMPAIGN_KWARGS, FAKE_TIME, IDENTITY_ID, IDENTITY_KWARGS,
INDICATOR_ID, INDICATOR_KWARGS, MALWARE_ID, MALWARE_KWARGS,
RELATIONSHIP_IDS,
)
@pytest.fixture
def ds():
cam = stix2.v21.Campaign(id=CAMPAIGN_ID, **CAMPAIGN_KWARGS)
idy = stix2.v21.Identity(id=IDENTITY_ID, **IDENTITY_KWARGS)
ind = stix2.v21.Indicator(id=INDICATOR_ID, **INDICATOR_KWARGS)
mal = stix2.v21.Malware(id=MALWARE_ID, **MALWARE_KWARGS)
rel1 = stix2.v21.Relationship(ind, 'indicates', mal, id=RELATIONSHIP_IDS[0])
rel2 = stix2.v21.Relationship(mal, 'targets', idy, id=RELATIONSHIP_IDS[1])
rel3 = stix2.v21.Relationship(cam, 'uses', mal, id=RELATIONSHIP_IDS[2])
stix_objs = [cam, idy, ind, mal, rel1, rel2, rel3]
yield stix2.MemoryStore(stix_objs)
def test_object_factory_created_by_ref_str():
factory = stix2.ObjectFactory(created_by_ref=IDENTITY_ID)
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert ind.created_by_ref == IDENTITY_ID
def test_object_factory_created_by_ref_obj():
id_obj = stix2.v21.Identity(id=IDENTITY_ID, **IDENTITY_KWARGS)
factory = stix2.ObjectFactory(created_by_ref=id_obj)
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert ind.created_by_ref == IDENTITY_ID
def test_object_factory_override_default():
factory = stix2.ObjectFactory(created_by_ref=IDENTITY_ID)
new_id = "identity--983b3172-44fe-4a80-8091-eb8098841fe8"
ind = factory.create(stix2.v21.Indicator, created_by_ref=new_id, **INDICATOR_KWARGS)
assert ind.created_by_ref == new_id
def test_object_factory_created():
factory = stix2.ObjectFactory(created=FAKE_TIME)
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert ind.created == FAKE_TIME
assert ind.modified == FAKE_TIME
def test_object_factory_external_reference():
ext_ref = stix2.v21.ExternalReference(
source_name="ACME Threat Intel",
description="Threat report",
)
factory = stix2.ObjectFactory(external_references=ext_ref)
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert ind.external_references[0].source_name == "ACME Threat Intel"
assert ind.external_references[0].description == "Threat report"
ind2 = factory.create(stix2.v21.Indicator, external_references=None, **INDICATOR_KWARGS)
assert 'external_references' not in ind2
def test_object_factory_obj_markings():
stmt_marking = stix2.v21.StatementMarking("Copyright 2016, Example Corp")
mark_def = stix2.v21.MarkingDefinition(
definition_type="statement",
definition=stmt_marking,
)
factory = stix2.ObjectFactory(object_marking_refs=[mark_def, stix2.v21.TLP_AMBER])
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert mark_def.id in ind.object_marking_refs
assert stix2.v21.TLP_AMBER.id in ind.object_marking_refs
factory = stix2.ObjectFactory(object_marking_refs=stix2.v21.TLP_RED)
ind = factory.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
assert stix2.v21.TLP_RED.id in ind.object_marking_refs
def test_object_factory_list_append():
ext_ref = stix2.v21.ExternalReference(
source_name="ACME Threat Intel",
description="Threat report from ACME",
)
ext_ref2 = stix2.v21.ExternalReference(
source_name="Yet Another Threat Report",
description="Threat report from YATR",
)
ext_ref3 = stix2.v21.ExternalReference(
source_name="Threat Report #3",
description="One more threat report",
)
factory = stix2.ObjectFactory(external_references=ext_ref)
ind = factory.create(stix2.v21.Indicator, external_references=ext_ref2, **INDICATOR_KWARGS)
assert ind.external_references[1].source_name == "Yet Another Threat Report"
ind = factory.create(stix2.v21.Indicator, external_references=[ext_ref2, ext_ref3], **INDICATOR_KWARGS)
assert ind.external_references[2].source_name == "Threat Report #3"
def test_object_factory_list_replace():
ext_ref = stix2.v21.ExternalReference(
source_name="ACME Threat Intel",
description="Threat report from ACME",
)
ext_ref2 = stix2.v21.ExternalReference(
source_name="Yet Another Threat Report",
description="Threat report from YATR",
)
factory = stix2.ObjectFactory(external_references=ext_ref, list_append=False)
ind = factory.create(stix2.v21.Indicator, external_references=ext_ref2, **INDICATOR_KWARGS)
assert len(ind.external_references) == 1
assert ind.external_references[0].source_name == "Yet Another Threat Report"
def test_environment_functions():
env = stix2.Environment(
stix2.ObjectFactory(created_by_ref=IDENTITY_ID),
stix2.MemoryStore(),
)
# Create a STIX object
ind = env.create(stix2.v21.Indicator, id=INDICATOR_ID, **INDICATOR_KWARGS)
assert ind.created_by_ref == IDENTITY_ID
# Add objects to datastore
ind2 = ind.new_version(labels=['benign'])
env.add([ind, ind2])
# Get both versions of the object
resp = env.all_versions(INDICATOR_ID)
assert len(resp) == 1 # should be 2, but MemoryStore only keeps 1 version of objects
# Get just the most recent version of the object
resp = env.get(INDICATOR_ID)
assert resp['labels'][0] == 'benign'
# Search on something other than id
query = [stix2.Filter('type', '=', 'vulnerability')]
resp = env.query(query)
assert len(resp) == 0
# See different results after adding filters to the environment
env.add_filters([
stix2.Filter('type', '=', 'indicator'),
stix2.Filter('created_by_ref', '=', IDENTITY_ID),
])
env.add_filter(stix2.Filter('labels', '=', 'benign')) # should be 'malicious-activity'
resp = env.get(INDICATOR_ID)
assert resp['labels'][0] == 'benign' # should be 'malicious-activity'
def test_environment_source_and_sink():
ind = stix2.v21.Indicator(id=INDICATOR_ID, **INDICATOR_KWARGS)
env = stix2.Environment(source=stix2.MemorySource([ind]), sink=stix2.MemorySink([ind]))
assert env.get(INDICATOR_ID).indicator_types[0] == 'malicious-activity'
def test_environment_datastore_and_sink():
with pytest.raises(ValueError) as excinfo:
stix2.Environment(
factory=stix2.ObjectFactory(),
store=stix2.MemoryStore(), sink=stix2.MemorySink,
)
assert 'Data store already provided' in str(excinfo.value)
def test_environment_no_datastore():
env = stix2.Environment(factory=stix2.ObjectFactory())
with pytest.raises(AttributeError) as excinfo:
env.add(stix2.v21.Indicator(**INDICATOR_KWARGS))
assert 'Environment has no data sink to put objects in' in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
env.get(INDICATOR_ID)
assert 'Environment has no data source' in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
env.all_versions(INDICATOR_ID)
assert 'Environment has no data source' in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
env.query(INDICATOR_ID)
assert 'Environment has no data source' in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
env.relationships(INDICATOR_ID)
assert 'Environment has no data source' in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
env.related_to(INDICATOR_ID)
assert 'Environment has no data source' in str(excinfo.value)
def test_environment_add_filters():
env = stix2.Environment(factory=stix2.ObjectFactory())
env.add_filters([INDICATOR_ID])
env.add_filter(INDICATOR_ID)
def test_environment_datastore_and_no_object_factory():
# Uses a default object factory
env = stix2.Environment(store=stix2.MemoryStore())
ind = env.create(stix2.v21.Indicator, id=INDICATOR_ID, **INDICATOR_KWARGS)
assert ind.id == INDICATOR_ID
def test_parse_malware():
env = stix2.Environment()
data = """{
"type": "malware",
"spec_version": "2.1",
"id": "malware--9c4638ec-f1de-4ddb-abf4-1b760417654e",
"created": "2017-01-01T12:34:56.000Z",
"modified": "2017-01-01T12:34:56.000Z",
"name": "Cryptolocker",
"malware_types": [
"ransomware"
],
"is_family": false
}"""
mal = env.parse(data, version="2.1")
assert mal.type == 'malware'
assert mal.spec_version == '2.1'
assert mal.id == MALWARE_ID
assert mal.created == FAKE_TIME
assert mal.modified == FAKE_TIME
assert mal.malware_types == ['ransomware']
assert mal.name == "Cryptolocker"
def test_creator_of():
identity = stix2.v21.Identity(**IDENTITY_KWARGS)
factory = stix2.ObjectFactory(created_by_ref=identity.id)
env = stix2.Environment(store=stix2.MemoryStore(), factory=factory)
env.add(identity)
ind = env.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
creator = env.creator_of(ind)
assert creator is identity
def test_creator_of_no_datasource():
identity = stix2.v21.Identity(**IDENTITY_KWARGS)
factory = stix2.ObjectFactory(created_by_ref=identity.id)
env = stix2.Environment(factory=factory)
ind = env.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
with pytest.raises(AttributeError) as excinfo:
env.creator_of(ind)
assert 'Environment has no data source' in str(excinfo.value)
def test_creator_of_not_found():
identity = stix2.v21.Identity(**IDENTITY_KWARGS)
factory = stix2.ObjectFactory(created_by_ref=identity.id)
env = stix2.Environment(store=stix2.MemoryStore(), factory=factory)
ind = env.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
creator = env.creator_of(ind)
assert creator is None
def test_creator_of_no_created_by_ref():
env = stix2.Environment(store=stix2.MemoryStore())
ind = env.create(stix2.v21.Indicator, **INDICATOR_KWARGS)
creator = env.creator_of(ind)
assert creator is None
def test_relationships(ds):
env = stix2.Environment(store=ds)
mal = env.get(MALWARE_ID)
resp = env.relationships(mal)
assert len(resp) == 3
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[1] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_no_id(ds):
env = stix2.Environment(store=ds)
mal = {
"type": "malware",
"name": "some variant",
}
with pytest.raises(ValueError) as excinfo:
env.relationships(mal)
assert "object has no 'id' property" in str(excinfo.value)
def test_relationships_by_type(ds):
env = stix2.Environment(store=ds)
mal = env.get(MALWARE_ID)
resp = env.relationships(mal, relationship_type='indicates')
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[0]
def test_relationships_by_source(ds):
env = stix2.Environment(store=ds)
resp = env.relationships(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[1]
def test_relationships_by_target(ds):
env = stix2.Environment(store=ds)
resp = env.relationships(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_type(ds):
env = stix2.Environment(store=ds)
resp = env.relationships(MALWARE_ID, relationship_type='uses', target_only=True)
assert len(resp) == 1
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_source(ds):
env = stix2.Environment(store=ds)
with pytest.raises(ValueError) as excinfo:
env.relationships(MALWARE_ID, target_only=True, source_only=True)
assert 'not both' in str(excinfo.value)
def test_related_to(ds):
env = stix2.Environment(store=ds)
mal = env.get(MALWARE_ID)
resp = env.related_to(mal)
assert len(resp) == 3
assert any(x['id'] == CAMPAIGN_ID for x in resp)
assert any(x['id'] == INDICATOR_ID for x in resp)
assert any(x['id'] == IDENTITY_ID for x in resp)
def test_related_to_no_id(ds):
env = stix2.Environment(store=ds)
mal = {
"type": "malware",
"name": "some variant",
}
with pytest.raises(ValueError) as excinfo:
env.related_to(mal)
assert "object has no 'id' property" in str(excinfo.value)
def test_related_to_by_source(ds):
env = stix2.Environment(store=ds)
resp = env.related_to(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert resp[0]['id'] == IDENTITY_ID
def test_related_to_by_target(ds):
env = stix2.Environment(store=ds)
resp = env.related_to(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == CAMPAIGN_ID for x in resp)
assert any(x['id'] == INDICATOR_ID for x in resp)