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

41 lines
1.1 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="7343a543-c2f6-4215-a21c-04eb8c764656",
platforms=["macos"],
endpoint=[
{
"rule_name": "Potential Masquerading as System Binary",
"rule_id": "bb1de0c7-3504-4b31-8d3e-928aa3acf64f",
}
],
siem=[],
techniques=["T1036", "T1036.004", "T1059", "T1059.004"],
)
@common.requires_os(*metadata.platforms)
def main():
masquerade = "/tmp/bash"
common.create_macos_masquerade(masquerade)
# Execute command
common.log("Launching fake bash commands to mimic passing a path to system bin")
command = f"exec -a /System/Applications/test {masquerade}"
common.execute([masquerade, "childprocess", command], timeout=5, kill=True, shell=True)
# cleanup
common.remove_file(masquerade)
if __name__ == "__main__":
exit(main())