Files
sigma-rules/rta/echo_tmp_file_create.py
T
2023-03-24 16:53:37 -04:00

43 lines
1.1 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.
from . import common
from . import RtaMetadata
metadata = RtaMetadata(
uuid="2182f7e5-fc4b-4476-86c3-e7128dfcaa7a",
platforms=["macos"],
endpoint=[
{
"rule_name": "Suspicious File Overwrite and Modification via Echo",
"rule_id": "cd3a06dc-58c3-4d57-a03a-0d8991f237e7",
}
],
siem=[],
techniques=["T1027", "T1059", "T1059.004"],
)
@common.requires_os(metadata.platforms)
def main():
file_path = "/tmp/test"
masquerade = "/tmp/testbin"
common.create_macos_masquerade(masquerade)
# Execute command
common.log("Launching fake bash commands to abnormal echo shell commands")
command = f"bash -c 'echo* > {file_path}'"
common.execute([masquerade, "childprocess", command], timeout=10, kill=True, shell=True)
# cleanup
common.remove_file(masquerade)
common.remove_file(file_path)
if __name__ == "__main__":
exit(main())