protections machine
61 lines
1.7 KiB
Python
61 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 pathlib import Path
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from . import RtaMetadata, common
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metadata = RtaMetadata(
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uuid="3d387400-3fc4-457f-92cd-8ba77271b348",
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platforms=["linux"],
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endpoint=[
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{
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"rule_name": "Egress Network Connection from Default DPKG Directory",
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"rule_id": "947b70bb-8e01-4f1b-994d-5af9488556bb",
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},
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],
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techniques=["T1546", "T1543", "T1574", "T1195", "T1071"],
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)
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@common.requires_os(*metadata.platforms)
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def main() -> None:
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# Ensure the /var/lib/dpkg/info/ directory exists
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dpkg_info_dir = "/var/lib/dpkg/info/"
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if not Path(dpkg_info_dir).exists():
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common.log(f"Creating directory {dpkg_info_dir}")
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Path(dpkg_info_dir).mkdir(parents=True, exist_ok=True)
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# Path for the fake DPKG package executable
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masquerade = str(Path(dpkg_info_dir) / "rta")
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source = common.get_path("bin", "netcon_exec_chain.elf")
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common.log("Creating a fake DPKG package..")
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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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# Execute the fake DPKG package
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common.log("Executing the fake DPKG package..")
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commands = [
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masquerade,
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"chain",
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"-h",
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"8.8.8.8",
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"-p",
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"53",
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"-c",
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"/var/lib/dpkg/info/rta netcon -h 8.8.8.8 -p 53",
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]
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common.execute([*commands], timeout=5, kill=True)
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# Cleanup
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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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