Files
sigma-rules/rta/linux_persistence_initd_netcon.py
T
2024-08-08 18:48:05 +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.
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="ac1f9204-f612-4d50-9de0-6dabcd589816",
platforms=["linux"],
endpoint=[
{
"rule_name": "System V Init (init.d) Egress Network Connection",
"rule_id": "b38eb534-230c-45f4-93ba-fc516ac51630"
}
],
techniques=["T1037", "T1071"],
)
@common.requires_os(*metadata.platforms)
def main():
# Path for the fake initd executable
masquerade = "/etc/init.d/rta"
source = common.get_path("bin", "netcon_exec_chain.elf")
common.log("Creating a fake initd executable..")
common.copy_file(source, masquerade)
common.log("Granting execute permissions...")
common.execute(['chmod', '+x', masquerade])
# Execute the fake initd executable
common.log("Executing the fake initd executable..")
commands = [masquerade, 'chain', '-h', '8.8.8.8', '-p', '53', '-c', '/etc/init.d/rta netcon -h 8.8.8.8 -p 53']
common.execute([*commands], timeout=5, kill=True)
# Cleanup
common.remove_file(masquerade)
if __name__ == "__main__":
exit(main())