Eric Forte
54 lines
1.7 KiB
Python
54 lines
1.7 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 . import RtaMetadata, common
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metadata = RtaMetadata(
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uuid="33f3ebda-7776-4cec-933b-48e85d707d61",
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platforms=["linux"],
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endpoint=[
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{
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"rule_name": "Suspicious Process Spawned from MOTD Detected",
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"rule_id": "b9b3922a-59ee-407c-8773-31b98bf9b18d",
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},
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],
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siem=[
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{
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"rule_name": "Suspicious Process Spawned from MOTD Detected",
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"rule_id": "4ec47004-b34a-42e6-8003-376a123ea447",
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},
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],
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techniques=[""],
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)
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@common.requires_os(metadata.platforms)
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def main() -> None:
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common.log("Creating a fake MOTD executable..")
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masquerade = "/etc/update-motd.d/socat"
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dir_path = "/etc/update-motd.d/"
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source = common.get_path("bin", "netcon_exec_chain.elf")
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common.log("Granting directory permissions for copy")
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common.execute(["sudo", "chmod", "777", dir_path])
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common.copy_file(source, masquerade)
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common.log("Granting execute permissions...")
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common.execute(["chmod", "+x", masquerade])
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commands = [masquerade, "exec", "-c", "nc -vz localhost 22"]
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common.log("Simulating MOTD netcat activity..")
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common.execute([*commands], timeout=5)
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common.log("MOTD netcat simulation successful!")
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common.log("Cleaning...")
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common.remove_file(masquerade)
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common.execute(["sudo", "chmod", "755", dir_path])
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common.log("RTA completed!")
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if __name__ == "__main__":
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sys.exit(main())
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