Eric Forte
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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# or more contributor license agreements. Licensed under the Elastic License
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# 2.0; you may not use this file except in compliance with the Elastic License
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# 2.0.
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import sys
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from pathlib import Path
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from . import RtaMetadata, common
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metadata = RtaMetadata(
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uuid="be8c9227-8266-4d91-931e-c53e07731d07",
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platforms=["linux"],
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endpoint=[
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{
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"rule_name": "Linux User Discovery Command Execution from Suspicious Directory",
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"rule_id": "c932c9f0-76ed-4d78-a242-cfaade43080c",
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},
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],
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techniques=["T1059", "T1033"],
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)
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@common.requires_os(*metadata.platforms)
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def main() -> None:
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# Path for the fake executable
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fake_executable = "/dev/shm/evil"
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# Create fake whoami executable
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masquerade = "/dev/shm/whoami"
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source = common.get_path("bin", "linux.ditto_and_spawn")
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common.copy_file(source, masquerade)
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# Create a fake executable that launches whoami
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with Path(fake_executable).open("w") as script:
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script.write("#!/bin/bash\n")
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script.write("/dev/shm/whoami\n")
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# Make the script executable
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common.execute(["chmod", "+x", fake_executable])
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# Execute the fake executable
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common.log("Launching whoami as a child of fake executable")
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common.execute([fake_executable], timeout=5, kill=True, shell=True) # noqa: S604
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# Cleanup
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common.remove_file(fake_executable)
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common.remove_file(masquerade)
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if __name__ == "__main__":
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sys.exit(main())
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