Files
sigma-rules/rta/linux_impact_enable_write_access_to_msr.py
T
2024-10-28 22:50:12 +05:30

42 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.
import sys
from . import RtaMetadata, common
metadata = RtaMetadata(
uuid="cf8104ca-bd23-4652-b1f7-b63e3d92bc66",
platforms=["linux"],
endpoint=[
{
"rule_name": "MSR Write Access Enabled",
"rule_id": "4342c282-ee21-4140-8e27-4e0f551489ef",
},
],
techniques=["T1496", "T1059"],
)
@common.requires_os(*metadata.platforms)
def main() -> None:
common.log("Creating a fake executable..")
masquerade = "/tmp/modprobe"
source = common.get_path("bin", "linux.ditto_and_spawn")
common.copy_file(source, masquerade)
common.log("Granting execute permissions...")
common.execute(["chmod", "+x", masquerade])
commands = [masquerade, "msr", "allow_writes=on"]
common.execute([*commands], timeout=5, kill=True)
common.log("Cleaning...")
common.remove_file(masquerade)
common.log("Simulation successfull!")
if __name__ == "__main__":
sys.exit(main())