eric-forte-elastic
61 lines
1.9 KiB
Python
61 lines
1.9 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: Suspicious WScript parent
|
|
# RTA: suspicious_wscript_parent.py
|
|
# signal.rule.name: Suspicious MS Outlook Child Process
|
|
# ATT&CK: T1064, T1192, T1193
|
|
# Description: WScript run with suspicious parent processes
|
|
|
|
import time
|
|
from pathlib import Path
|
|
|
|
from . import RtaMetadata, common
|
|
|
|
metadata = RtaMetadata(
|
|
uuid="a3cdd478-b817-4513-bb3d-897a5f92c836",
|
|
platforms=["windows"],
|
|
endpoint=[],
|
|
siem=[
|
|
{"rule_id": "32f4675e-6c49-4ace-80f9-97c9259dca2e", "rule_name": "Suspicious MS Outlook Child Process"},
|
|
{"rule_id": "a624863f-a70d-417f-a7d2-7a404638d47f", "rule_name": "Suspicious MS Office Child Process"},
|
|
],
|
|
techniques=["T1566"],
|
|
)
|
|
|
|
|
|
@common.requires_os(*metadata.platforms)
|
|
def main():
|
|
script_data = """
|
|
WScript.CreateObject("wscript.shell")
|
|
"""
|
|
script_path = ".\\hello.vbs"
|
|
with open(script_path, "w") as f:
|
|
f.write(script_data)
|
|
|
|
cmd_path = "c:\\windows\\system32\\cmd.exe"
|
|
|
|
for application in ["outlook.exe", "explorer.exe", "chrome.exe", "firefox.exe"]:
|
|
common.log("Emulating %s" % application)
|
|
app_path = Path(application).resolve()
|
|
common.copy_file(cmd_path, app_path)
|
|
|
|
common.execute([app_path, "/c", "wscript.exe", "script_path"], timeout=1, kill=True)
|
|
|
|
common.log("Killing wscript window")
|
|
common.execute("taskkill /IM wscript.exe")
|
|
|
|
common.log("Cleanup %s" % app_path)
|
|
common.remove_file(app_path)
|
|
|
|
common.log("Sleep 5 to allow procecsses to finish")
|
|
time.sleep(5)
|
|
common.log("Cleanup %s" % script_path)
|
|
common.remove_file(script_path)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
exit(main())
|