Files
sigma-rules/rta/cat_network_activity.py
T
2024-06-07 00:12:37 +05:30

37 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="fcd2d0fe-fed2-424a-bdc5-e9bef5031344",
platforms=["linux"],
endpoint=[{"rule_name": "Network Activity Detected via cat", "rule_id": "25ae94f5-0214-4bf1-b534-33d4ffc3d41c"}],
siem=[{"rule_name": "Network Activity Detected via cat", "rule_id": "afd04601-12fc-4149-9b78-9c3f8fe45d39"}],
techniques=[""],
)
@common.requires_os(metadata.platforms)
def main() -> None:
common.log("Creating a fake cat executable..")
masquerade = "/tmp/cat"
source = common.get_path("bin", "netcon_exec_chain.elf")
common.copy_file(source, masquerade)
common.log("Granting execute permissions...")
common.execute(["chmod", "+x", masquerade])
common.log("Simulating cat network activity..")
common.execute([masquerade, "netcon", "-h", "8.8.8.8", "-p", "53"], timeout=10, kill=True, shell=True) # noqa: S604
common.log("Cat network simulation successful!")
common.log("Cleaning...")
common.remove_file(masquerade)
common.log("RTA completed!")
if __name__ == "__main__":
sys.exit(main())