Files
sigma-rules/rta/mshta_network.py
T
2023-10-03 10:47:58 -04:00

53 lines
1.6 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.
# Name: Microsoft HTA tool (mshta.exe) with Network Callback
# RTA: mshta_network.py
# ATT&CK: T1170
# Description: Generates network traffic from mshta.exe
from . import common
from . import RtaMetadata
HTA_FILE = common.get_path("bin", "beacon.hta")
metadata = RtaMetadata(
uuid="83465fca-25ae-4d6d-b747-c82cda75b0ae",
platforms=["windows"],
endpoint=[],
siem=[
{
"rule_id": "1fe3b299-fbb5-4657-a937-1d746f2c711a",
"rule_name": "Unusual Network Activity from a Windows System Binary",
},
{"rule_id": "c2d90150-0133-451c-a783-533e736c12d7", "rule_name": "Mshta Making Network Connections"},
{"rule_id": "a4ec1382-4557-452b-89ba-e413b22ed4b8", "rule_name": "Network Connection via Mshta"},
],
techniques=["T1127", "T1218"],
)
@common.requires_os(*metadata.platforms)
@common.dependencies(HTA_FILE)
def main():
# http server will terminate on main thread exit
# if daemon is True
common.log("MsHta Beacon")
server, ip, port = common.serve_web()
common.clear_web_cache()
new_callback = "http://%s:%d" % (ip, port)
common.log("Updating the callback to %s" % new_callback)
common.patch_regex(HTA_FILE, common.CALLBACK_REGEX, new_callback)
mshta = "mshta.exe"
common.execute([mshta, HTA_FILE], timeout=3, kill=True)
server.shutdown()
if __name__ == "__main__":
exit(main())