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

45 lines
1.2 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.
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="7cc740ff-2e6c-4740-9323-46dcbb4dbfbc",
platforms=["windows"],
endpoint=[
{
"rule_name": "UAC Bypass via ComputerDefaults Execution Hijack",
"rule_id": "7c0048d5-356d-4f69-839e-10c1e194958f",
}
],
siem=[],
techniques=["T1548"],
)
EXE_FILE = common.get_path("bin", "renamed_posh.exe")
@common.requires_os(*metadata.platforms)
def main():
key = "Software\\Classes\\ms-settings\\shell\\open\\command"
value = "test"
data = "test"
with common.temporary_reg(common.HKCU, key, value, data):
pass
computerdefaults = "C:\\Users\\Public\\ComputerDefaults.exe"
powershell = "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe"
common.copy_file(EXE_FILE, computerdefaults)
common.execute([computerdefaults, "/c", powershell], timeout=2, kill=True)
common.remove_file(computerdefaults)
if __name__ == "__main__":
exit(main())