Files
sigma-rules/rta/unusual_ms_tool_network.py
T
2021-03-03 22:12:11 -09:00

58 lines
1.4 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: Unexpected Network Activity from Microsoft Tools
# RTA: unusual_ms_tool_network.py
# ATT&CK: T1127
# Description: Creates network traffic from a process which is named to match common administration and developer tools
# that do not typically make network traffic unless being used maliciously.
import os
import shutil
import sys
from . import common
if sys.version_info > (3,):
urlliblib = "urllib.request"
else:
urlliblib = "urllib"
process_names = [
"bginfo.exe",
"msdt.exe",
"ieexec.exe",
"cdb.exe",
"dnx.exe",
"rcsi.exe",
"csi.exe",
"cmstp.exe",
"xwizard.exe",
"fsi.exe",
"odbcconf.exe"
]
def http_from_process(name, ip, port):
path = os.path.join(common.BASE_DIR, name)
common.log("Making HTTP GET from %s" % path)
shutil.copy(sys.executable, path)
common.execute([path, "-c", "from %s import urlopen ; urlopen('http://%s:%d')" % (urlliblib, ip, port)])
common.remove_file(path)
@common.requires_os(common.WINDOWS)
def main():
server, ip, port = common.serve_web()
for process in process_names:
http_from_process(process, ip, port)
server.shutdown()
if __name__ == "__main__":
exit(main())