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

45 lines
1.3 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="8c634401-fd71-475e-b449-41b776b2b8c9",
platforms=["linux"],
endpoint=[
{
"rule_name": "Network Connection by Foomatic-rip Child",
"rule_id": "93d7b72d-3914-44fb-92bf-63675769ef12",
},
],
techniques=["T1203"],
)
@common.requires_os(*metadata.platforms)
def main() -> None:
# Path for the fake motd executable
masquerade = "/tmp/foomatic-rip"
source = common.get_path("bin", "netcon_exec_chain.elf")
common.log("Creating a fake motd executable..")
common.copy_file(source, masquerade)
common.log("Granting execute permissions...")
common.execute(["chmod", "+x", masquerade])
# Execute the fake motd executable
common.log("Executing the fake motd executable..")
commands = [masquerade, "chain", "-h", "8.8.8.8", "-p", "53", "-c", "/tmp/foomatic-rip netcon -h 8.8.8.8 -p 53"]
common.execute([*commands], timeout=5, kill=True)
# Cleanup
common.remove_file(masquerade)
if __name__ == "__main__":
sys.exit(main())