eric-forte-elastic
46 lines
1.6 KiB
Python
46 lines
1.6 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="2145af1a-0781-47ab-8d73-2d50e93b5ff7",
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platforms=["windows"],
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endpoint=[
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{'rule_id': '048737fe-80d6-4462-aa80-ffeed853103e', 'rule_name': 'Suspicious Vault Client Image Load'},
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{'rule_id': '65784f6e-247a-466b-bbfb-cd92024f7e82', 'rule_name': 'Suspicious PowerShell Execution'}
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],
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siem=[],
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techniques=['T1555', 'T1555.004', 'T1059', 'T1059.001'],
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)
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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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powershell = "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe"
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user32 = "C:\\Windows\\System32\\user32.dll"
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dll = "C:\\Users\\Public\\vaultcli.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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common.copy_file(user32, dll)
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common.copy_file(PS1_FILE, ps1)
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common.copy_file(RENAMER, rcedit)
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common.log("Modifying the OriginalFileName attribute")
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common.execute([rcedit, dll, "--set-version-string", "OriginalFilename", "vaultcli.dll"])
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common.log("Loading vaultcli.dll")
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common.execute([powershell, "-c", f"echo downloadstring; Import-Module {ps1}; Invoke-ImageLoad {dll}"], timeout=10)
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common.remove_files(dll, ps1, rcedit)
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if __name__ == "__main__":
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exit(main())
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