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90 lines
4.0 KiB
Python
90 lines
4.0 KiB
Python
# Copyright (C) 2024 Mandiant, Inc. All Rights Reserved.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at: [package root]/LICENSE.txt
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# Unless required by applicable law or agreed to in writing, software distributed under the License
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# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and limitations under the License.
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import fixtures
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import capa.main
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import capa.features.file
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import capa.features.insn
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import capa.features.common
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DYNAMIC_VMRAY_FEATURE_PRESENCE_TESTS = sorted(
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[
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("93b2d1-vmray", "file", capa.features.common.String("api.%x%x.%s"), True),
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("93b2d1-vmray", "file", capa.features.common.String("\\Program Files\\WindowsApps\\does_not_exist"), False),
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# file/imports
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("93b2d1-vmray", "file", capa.features.file.Import("GetAddrInfoW"), True),
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# thread/api calls
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("93b2d1-vmray", "process=(2176:0),thread=7", capa.features.insn.API("GetAddrInfoW"), True),
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("93b2d1-vmray", "process=(2176:0),thread=7", capa.features.insn.API("DoesNotExist"), False),
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# call/api
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2361", capa.features.insn.API("GetAddrInfoW"), True),
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# call/string argument
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(
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"93b2d1-vmray",
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"process=(2176:0),thread=7,call=10323",
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capa.features.common.String("raw.githubusercontent.com"),
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True,
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),
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# call/number argument
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# VirtualAlloc(4096, 4)
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2358", capa.features.insn.Number(4096), True),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2358", capa.features.insn.Number(4), True),
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],
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# order tests by (file, item)
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# so that our LRU cache is most effective.
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key=lambda t: (t[0], t[1]),
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)
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DYNAMIC_VMRAY_FEATURE_COUNT_TESTS = sorted(
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[
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# file/imports
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("93b2d1-vmray", "file", capa.features.file.Import("GetAddrInfoW"), 1),
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# thread/api calls
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("93b2d1-vmray", "process=(2176:0),thread=7", capa.features.insn.API("free"), 1),
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("93b2d1-vmray", "process=(2176:0),thread=7", capa.features.insn.API("GetAddrInfoW"), 5),
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# call/api
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2345", capa.features.insn.API("free"), 1),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2345", capa.features.insn.API("GetAddrInfoW"), 0),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=2361", capa.features.insn.API("GetAddrInfoW"), 1),
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# call/string argument
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(
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"93b2d1-vmray",
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"process=(2176:0),thread=7,call=10323",
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capa.features.common.String("raw.githubusercontent.com"),
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1,
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),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=10323", capa.features.common.String("non_existant"), 0),
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# call/number argument
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("93b2d1-vmray", "process=(2176:0),thread=7,call=10315", capa.features.insn.Number(4096), 1),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=10315", capa.features.insn.Number(4), 1),
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("93b2d1-vmray", "process=(2176:0),thread=7,call=10315", capa.features.insn.Number(404), 0),
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],
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# order tests by (file, item)
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# so that our LRU cache is most effective.
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key=lambda t: (t[0], t[1]),
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)
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@fixtures.parametrize(
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"sample,scope,feature,expected",
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DYNAMIC_VMRAY_FEATURE_PRESENCE_TESTS,
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indirect=["sample", "scope"],
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)
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def test_vmray_features(sample, scope, feature, expected):
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fixtures.do_test_feature_presence(fixtures.get_vmray_extractor, sample, scope, feature, expected)
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@fixtures.parametrize(
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"sample,scope,feature,expected",
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DYNAMIC_VMRAY_FEATURE_COUNT_TESTS,
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indirect=["sample", "scope"],
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)
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def test_vmray_feature_counts(sample, scope, feature, expected):
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fixtures.do_test_feature_count(fixtures.get_vmray_extractor, sample, scope, feature, expected)
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