Files
sigma-rules/rta/persistent_scripts.py
T
eric-forte-elastic 16550b7144 [Bug] Updated os.path calls to pathlib (#3110)
* Updated os.path calls to pathlib

* fixed typo

* os.join replacement typo

* additional join typo

* updated os directory functions

* exist_ok typo

* cleanup

* Updated for cleanliness

---------

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
2023-09-28 16:32:55 -04:00

73 lines
2.1 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: Persistent Scripts
# RTA: persistent_scripts.py
# ATT&CK: T1064 (Scripting), T1086 (PowerShell)
import os
import time
from pathlib import Path
from . import RtaMetadata, common
metadata = RtaMetadata(
uuid="2ab62c28-1abb-4ac5-a16d-2f4f75d01d02",
platforms=["windows"],
endpoint=[],
siem=[{"rule_id": "afcce5ad-65de-4ed2-8516-5e093d3ac99a", "rule_name": "Local Scheduled Task Creation"}],
techniques=["T1053"],
)
VBS = common.get_path("bin", "persistent_script.vbs")
NAME = "rta-vbs-persistence"
@common.requires_os(metadata.platforms)
@common.dependencies(common.PS_EXEC, VBS)
def main():
common.log("Persistent Scripts")
if common.check_system():
common.log("Must be run as a non-SYSTEM user", log_type="!")
return 1
# Remove any existing profiles
user_profile = os.environ["USERPROFILE"]
log_file = Path(user_profile) / NAME / ".log"
# Remove log file if exists
common.remove_file(log_file)
common.log("Running VBS")
common.execute(["cscript.exe", VBS])
# Let the script establish persistence, then read the log file back
time.sleep(5)
common.print_file(log_file)
common.remove_file(log_file)
# Now trigger a 'logon' event which causes persistence to run
common.log("Simulating user logon and loading of profile")
# common.execute(["taskkill.exe", "/f", "/im", "explorer.exe"])
# time.sleep(2)
common.execute(["C:\\Windows\\System32\\userinit.exe"], wait=True)
common.execute(["schtasks.exe", "/run", "/tn", NAME])
# Wait for the "logon" to finish
time.sleep(30)
common.print_file(log_file)
# Now delete the user profile
common.log("Cleanup", log_type="-")
common.remove_file(log_file)
common.execute(["schtasks.exe", "/delete", "/tn", NAME, "/f"])
if __name__ == "__main__":
exit(main())