Mika Ayenson
55 lines
1.5 KiB
Python
55 lines
1.5 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: Emulate MS Office Dropping an executable file to disk
|
|
# RTA: ms_office_drop_exe.py
|
|
# ATT&CK: T1064
|
|
# Description: MS Office writes executable file and it is run.
|
|
|
|
import os
|
|
import time
|
|
|
|
from . import common
|
|
from . import RtaMetadata
|
|
|
|
|
|
metadata = RtaMetadata(
|
|
uuid="ce85674f-fb6c-44d5-b880-4ce9062e1028",
|
|
platforms=["windows"],
|
|
endpoint=[],
|
|
siem=[
|
|
{
|
|
"rule_id": "0d8ad79f-9025-45d8-80c1-4f0cd3c5e8e5",
|
|
"rule_name": "Execution of File Written or Modified by Microsoft Office",
|
|
}
|
|
],
|
|
techniques=["T1566"],
|
|
)
|
|
|
|
|
|
@common.requires_os(metadata.platforms)
|
|
def main():
|
|
cmd_path = "c:\\windows\\system32\\cmd.exe"
|
|
|
|
for office_app in ["winword.exe", "excel.exe", "powerpnt.exe", "outlook.exe"]:
|
|
common.log("Emulating office application %s" % office_app)
|
|
office_path = os.path.abspath(office_app)
|
|
common.copy_file(cmd_path, office_path)
|
|
|
|
bad_path = os.path.abspath("bad-{}-{}.exe".format(hash(office_app), os.getpid()))
|
|
common.execute([office_path, "/c", "copy", cmd_path, bad_path])
|
|
|
|
time.sleep(1)
|
|
common.execute([bad_path, "/c", "whoami"])
|
|
|
|
# cleanup
|
|
time.sleep(1)
|
|
common.remove_files(office_app, bad_path)
|
|
print("")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
exit(main())
|