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

47 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.
# Name: Outbound SMB from a User Process
# RTA: smb_connection.py
# ATT&CK: T1105
# Description: Initiates an SMB connection to a target machine, without going through the normal Windows APIs.
import socket
import sys
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="b0e3e1bb-dfa5-473a-8862-b2d1d42819ce",
platforms=["windows"],
endpoint=[],
siem=[{"rule_id": "c82c7d8f-fb9e-4874-a4bd-fd9e3f9becf1", "rule_name": "Direct Outbound SMB Connection"}],
techniques=["T1021"],
)
SMB_PORT = 445
@common.requires_os(*metadata.platforms)
def main(ip=None):
ip = ip or common.get_ip()
# connect to rpc
common.log("Connecting to {}:{}".format(ip, SMB_PORT))
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((ip, 445))
common.log("Sending HELLO")
s.send(b"HELLO!")
common.log("Shutting down the connection...")
s.close()
common.log("Closed connection to {}:{}".format(ip, SMB_PORT))
if __name__ == "__main__":
exit(main(*sys.argv[1:]))