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

49 lines
1.4 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="49b9a7c8-5974-4ed3-bba0-12ab02d9b8bc",
platforms=["linux"],
endpoint=[
{
"rule_name": "Potential Proxy Execution via Sed",
"rule_id": "272cf3e7-fd3f-442b-a781-f9e864fb1d4c",
},
],
techniques=["T1218", "T1059"],
)
@common.requires_os(*metadata.platforms)
def main() -> None:
common.log("Creating a fake executable..")
masquerade = "/tmp/sed"
masquerade2 = "/tmp/sh"
source = common.get_path("bin", "linux.ditto_and_spawn")
common.copy_file(source, masquerade)
common.log("Granting execute permissions...")
common.execute(["chmod", "+x", masquerade])
source = common.get_path("bin", "linux.ditto_and_spawn")
common.copy_file(source, masquerade2)
common.log("Granting execute permissions...")
common.execute(["chmod", "+x", masquerade2])
commands = [masquerade, "-n", masquerade, "-c", "whoami"]
common.execute([*commands], timeout=5, kill=True)
common.log("Cleaning...")
common.remove_file(masquerade)
common.remove_file(masquerade2)
common.log("Simulation successfull!")
if __name__ == "__main__":
sys.exit(main())