Mika Ayenson
44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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# or more contributor license agreements. Licensed under the Elastic License
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# 2.0; you may not use this file except in compliance with the Elastic License
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# 2.0.
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from . import common
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from . import RtaMetadata
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metadata = RtaMetadata(
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uuid="511278ac-4996-438e-ba03-bef8f10665b5",
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platforms=["windows"],
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endpoint=[
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{"rule_name": "Execution via Renamed Signed Binary Proxy", "rule_id": "b0207677-5041-470b-981d-13ab956cf5b4"},
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{"rule_name": "MSBuild with Unusual Arguments", "rule_id": "6518cdaf-e6cd-4cf9-a51e-043117c3dbeb"},
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],
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siem=[],
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techniques=["T1127", "T1218"],
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)
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RENAMER = common.get_path("bin", "rcedit-x64.exe")
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EXE_FILE = common.get_path("bin", "renamed_posh.exe")
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@common.requires_os(metadata.platforms)
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def main():
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msbuild = "C:\\Users\\Public\\posh.exe"
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rcedit = "C:\\Users\\Public\\rcedit.exe"
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common.copy_file(RENAMER, rcedit)
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common.copy_file(EXE_FILE, msbuild)
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# Execute command
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common.log("Modifying the OriginalFileName attribute")
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common.execute([rcedit, msbuild, "--set-version-string", "OriginalFilename", "MSBuild.exe"])
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common.log("Executing modified binary with extexport.exe original file name")
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common.execute([msbuild, "-Version"], timeout=10, kill=True)
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common.remove_files(msbuild, rcedit)
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if __name__ == "__main__":
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exit(main())
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