protections machine
292d7b9215
Co-authored-by: shashank-elastic <91139415+shashank-elastic@users.noreply.github.com>
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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from . import common
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from . import RtaMetadata
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import os
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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():
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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 os.path.exists(dpkg_info_dir):
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common.log(f"Creating directory {dpkg_info_dir}")
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os.makedirs(dpkg_info_dir)
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# Path for the fake DPKG package executable
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masquerade = os.path.join(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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exit(main())
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