Files
sigma-rules/rta/winrar_startup_folder.py
T
2023-10-03 10:47:58 -04:00

45 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: WinRAR Startup Folder
# RTA: winrar_startup_folder.py
# ATT&CK: T1060
# Description: Writes batch file into Windows Startup folder using process ancestry tied to exploit (CVE-2018-20250)
import os
from pathlib import Path
from . import RtaMetadata, common
metadata = RtaMetadata(
uuid="6d2d3c21-2d71-4395-8ab7-b1d0138d9225",
platforms=["windows"],
endpoint=[],
siem=[],
techniques=[]
)
@common.requires_os(*metadata.platforms)
def main():
common.log("WinRAR StartUp Folder Persistence")
win_rar_path = Path("WinRAR.exe").resolve()
ace_loader_path = Path("Ace32Loader.exe").resolve()
batch_file_path = "\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\mssconf.bat"
startup_path = os.environ["USERPROFILE"] + batch_file_path
common.copy_file("C:\\Windows\\System32\\cmd.exe", win_rar_path)
common.copy_file("C:\\Windows\\System32\\cmd.exe", ace_loader_path)
common.execute(
[win_rar_path, "/c", ace_loader_path, "/c", "echo", "test", "^>", startup_path],
kill=True,
)
common.remove_file(startup_path)
common.remove_file(ace_loader_path)
common.remove_file(win_rar_path)
if __name__ == "__main__":
exit(main())