protections machine
57 lines
1.7 KiB
Python
57 lines
1.7 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 pathlib import Path
|
|
|
|
from . import RtaMetadata, common
|
|
|
|
metadata = RtaMetadata(
|
|
uuid="535959a4-5bad-44d8-9ebd-003d7ed0733c",
|
|
platforms=["linux"],
|
|
endpoint=[
|
|
{
|
|
"rule_name": "Egress Network Connection from RPM Package",
|
|
"rule_id": "d20cd4ba-ff65-4e1c-8012-4241d449b16b",
|
|
},
|
|
],
|
|
techniques=["T1546", "T1543", "T1574", "T1195", "T1071"],
|
|
)
|
|
|
|
|
|
@common.requires_os(*metadata.platforms)
|
|
def main() -> None:
|
|
# Ensure the /var/tmp/ directory exists
|
|
rpm_info_dir = "/var/tmp/"
|
|
if not Path(rpm_info_dir).exists():
|
|
common.log(f"Creating directory {rpm_info_dir}")
|
|
Path(rpm_info_dir).mkdir(parents=True, exist_ok=True)
|
|
|
|
# Path for the fake RPM package executable
|
|
masquerade = str(Path(rpm_info_dir) / "rpm-tmp.rta")
|
|
source = common.get_path("bin", "netcon_exec_chain.elf")
|
|
|
|
common.log("Creating a fake RPM package..")
|
|
common.copy_file(source, masquerade)
|
|
common.log("Granting execute permissions...")
|
|
common.execute(["chmod", "+x", masquerade])
|
|
|
|
# Execute the fake RPM package
|
|
common.log("Executing the fake RPM package..")
|
|
commands = [
|
|
masquerade,
|
|
"exec",
|
|
"-c",
|
|
"exec /var/tmp/rpm-tmp.rta netcon -h 8.8.8.8 -p 53",
|
|
]
|
|
common.execute([*commands], timeout=5, kill=True, shell=True) # noqa: S604
|
|
|
|
# Cleanup
|
|
common.remove_file(masquerade)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
sys.exit(main())
|