diff --git a/rta/linux_impact_enable_write_access_to_msr.py b/rta/linux_impact_enable_write_access_to_msr.py new file mode 100644 index 00000000000..90b7df179fe --- /dev/null +++ b/rta/linux_impact_enable_write_access_to_msr.py @@ -0,0 +1,40 @@ +# 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. + +import sys +from . import RtaMetadata, common + +metadata = RtaMetadata( + uuid="cf8104ca-bd23-4652-b1f7-b63e3d92bc66", + platforms=["linux"], + endpoint=[ + { + "rule_name": "MSR Write Access Enabled", + "rule_id": "4342c282-ee21-4140-8e27-4e0f551489ef", + }, + ], + techniques=["T1496", "T1059"], +) + + +@common.requires_os(*metadata.platforms) +def main() -> None: + common.log("Creating a fake executable..") + masquerade = "/tmp/modprobe" + + source = common.get_path("bin", "linux.ditto_and_spawn") + common.copy_file(source, masquerade) + common.log("Granting execute permissions...") + common.execute(["chmod", "+x", masquerade]) + + commands = [masquerade, 'msr', "allow_writes=on"] + common.execute([*commands], timeout=5, kill=True) + common.log("Cleaning...") + common.remove_file(masquerade) + common.log("Simulation successfull!") + + +if __name__ == "__main__": + sys.exit(main())