Files
sigma-rules/rta/exec_renamed_msbuild.py
T
2023-10-03 10:47:58 -04:00

41 lines
1.2 KiB
Python

# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
# or more contributor license agreements. Licensed under the Elastic License
# 2.0; you may not use this file except in compliance with the Elastic License
# 2.0.
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="465eb9a9-2f8b-458b-9ea4-e50912ce1b89",
platforms=["windows"],
endpoint=[],
siem=[{
'rule_id': '9d110cb3-5f4b-4c9a-b9f5-53f0a1707ae4',
'rule_name': 'Microsoft Build Engine Using an Alternate Name'
}],
techniques=['T1036', 'T1036.003'],
)
EXE_FILE = common.get_path("bin", "renamed_posh.exe")
RENAMER = common.get_path("bin", "rcedit-x64.exe")
@common.requires_os(*metadata.platforms)
def main():
msbuild = "C:\\Users\\Public\\rta.exe"
rcedit = "C:\\Users\\Public\\rcedit.exe"
common.copy_file(RENAMER, rcedit)
common.copy_file(EXE_FILE, msbuild)
common.log("Modifying the OriginalFileName attribute")
common.execute([rcedit, msbuild, "--set-version-string", "OriginalFilename", "MSBuild.exe"])
common.execute([msbuild], timeout=2, kill=True)
common.remove_files(rcedit, msbuild)
if __name__ == "__main__":
exit(main())