Jonhnathan
95b8b1688b
* [RTA] Add RTAs for Endpoint Rules - 2 * Update exec_conhost_indirect.py * Update msoffice_file_dll_sideload.py --------- Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
60 lines
2.0 KiB
Python
60 lines
2.0 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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import time
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metadata = RtaMetadata(
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uuid="c80653a4-26fa-4a9e-b06c-12d12680c4e7",
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platforms=["windows"],
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endpoint=[
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{
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'rule_id': '68218637-3940-42cb-b2b7-0610fc1dde56',
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'rule_name': 'DLL Side Loading of a file dropped by Microsoft Office'
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},
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{
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'rule_id': '37c54ca7-e96d-4fd5-92d3-08cab38516b7',
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'rule_name': 'Suspicious Executable File Creation'
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}
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],
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siem=[],
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techniques=[
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'T1574', 'T1574.001', 'T1574.002', 'T1566', 'T1566.001', 'T1105', 'T1059', 'T1059.005', 'T1059.007'
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],
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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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RENAMER = common.get_path("bin", "rcedit-x64.exe")
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@common.requires_os(metadata.platforms)
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def main():
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winword = "C:\\Users\\Public\\winword.exe"
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user32 = "C:\\Windows\\System32\\user32.dll"
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dll = "C:\\Users\\Public\\targetdll.dll"
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ps1 = "C:\\Users\\Public\\Invoke-ImageLoad.ps1"
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rcedit = "C:\\Users\\Public\\rcedit.exe"
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powershell = "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe"
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common.copy_file(EXE_FILE, winword)
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common.copy_file(PS1_FILE, ps1)
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common.copy_file(RENAMER, rcedit)
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common.execute([winword, "/c", f"Copy-Item {user32} '{dll}'"])
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common.log("Modifying the OriginalFileName attribute to invalidate the signature")
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common.execute([rcedit, dll, "--set-version-string", "OriginalFilename", "unsigned.dll"])
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common.log("Loading targetdll.dll into fake proc")
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common.execute([powershell, "-c", f"Import-Module {ps1}; Invoke-ImageLoad {dll}"], timeout=10)
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time.sleep(3)
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common.remove_files(rcedit, dll, ps1, winword)
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if __name__ == "__main__":
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exit(main())
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