46 lines
1.4 KiB
Python
46 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="b9d5427a-33c4-4b1d-838d-f47c5f3b0b43",
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platforms=["windows"],
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endpoint=[
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{"rule_name": "Binary Masquerading via Untrusted Path", "rule_id": "35dedf0c-8db6-4d70-b2dc-a133b808211f"},
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{"rule_name": "Suspicious WMIC XSL Script Execution", "rule_id": "18371ec4-ee2f-465b-8757-ee726914006c"},
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],
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siem=[],
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techniques=["T1220", "T1047", "T1036"],
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)
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EXE_FILE = common.get_path("bin", "renamed_posh.exe")
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PS1_FILE = common.get_path("bin", "Invoke-ImageLoad.ps1")
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@common.requires_os(*metadata.platforms)
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def main():
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wmic = "C:\\Users\\Public\\wmic.exe"
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user32 = "C:\\Windows\\System32\\user32.dll"
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dll = "C:\\Users\\Public\\jscript.dll"
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ps1 = "C:\\Users\\Public\\Invoke-ImageLoad.ps1"
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common.copy_file(EXE_FILE, wmic)
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common.copy_file(user32, dll)
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common.copy_file(PS1_FILE, ps1)
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common.log("Loading jscript.dll into fake wmic")
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common.execute(
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[wmic, "-c", f"Import-Module {ps1}; Invoke-ImageLoad {dll}; echo /format:"],
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timeout=10,
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)
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common.remove_files(wmic, dll, ps1)
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if __name__ == "__main__":
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exit(main())
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