sigma-rules/rta/settingcontentms_files.py

# 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: Abusing SettingContent-ms Files
# RTA: settingcontentms_files.py
# signal.rule.name: Potential Modification of Accessibility Binaries
# signal.rule.name: Local Service Commands
# ATT&CK: T1193, T1204, T1064
# Description: SettingContent-ms file written to specific path or by risky process

import time

from . import common
from . import RtaMetadata


metadata = RtaMetadata(
    uuid="7dea9748-dcac-49a9-8909-bd1f5590e508",
    platforms=["windows"],
    endpoint=[],
    siem=[
        {
            "rule_id": "7405ddf1-6c8e-41ce-818f-48bea6bcaed8",
            "rule_name": "Potential Modification of Accessibility Binaries",
        }
    ],
    techniques=["T1546"],
)


@common.requires_os(*metadata.platforms)
def main():
    # Write to AppData\Local\
    common.execute(["cmd", "/c", "echo", "test", ">", "%APPDATA%\\test.SettingContent-ms"])
    time.sleep(1)
    common.execute(["cmd", "/c", "del", "%APPDATA%\\test.SettingContent-ms"])


if __name__ == "__main__":
    exit(main())