Justin Ibarra
37 lines
1.1 KiB
Python
37 lines
1.1 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: RunDLL32 Javascript Callback
|
|
# RTA: rundll32_javascript_callback.py
|
|
# signal.rule.name: Local Service Commands
|
|
# signal.rule.name: Potential Modification of Accessibility Binaries
|
|
# ATT&CK: T1085
|
|
# Description: Executes javascript code with an AJAX call via RunDll32.exe
|
|
|
|
from . import common
|
|
|
|
|
|
@common.requires_os(common.WINDOWS)
|
|
def main():
|
|
common.log("RunDLL32 with Javascript Callback")
|
|
server, ip, port = common.serve_web()
|
|
common.clear_web_cache()
|
|
|
|
url = "http://%s:%d" % (ip, port)
|
|
rundll32 = 'rundll32.exe'
|
|
js = """
|
|
'javascript:"\..\mshtml,RunHTMLApplication ";'
|
|
'var%20xhr=new%20ActiveXObject("Msxml2.XMLHttp.6.0");,'
|
|
'xhr.open("GET", "{url}",false);xhr.send();'
|
|
""".format(url=url)
|
|
packed_js = ''.join(s.strip() for s in js.splitlines())
|
|
|
|
common.execute([rundll32, packed_js])
|
|
server.shutdown()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
exit(main())
|