Ross Wolf
a0d3b4bd23
Co-Authored-By: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-Authored-By: Daniel Stepanic <57736958+dstepanic17@users.noreply.github.com> Co-Authored-By: David French <56409778+threat-punter@users.noreply.github.com> Co-Authored-By: Joe Desimone <56411054+joe-desimone@users.noreply.github.com> Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>
32 lines
1.0 KiB
Python
32 lines
1.0 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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# you may not use this file except in compliance with the Elastic License.
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# Name: Certutil Encode / Decode
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# RTA: certutil_file_obfuscation.py
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# ATT&CK: T1140
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# Description: Uses certutil to create an encoded copy of cmd.exe. Then uses certutil to decode that copy.
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import os
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from . import common
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@common.requires_os(common.WINDOWS)
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def main():
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common.log("Encoding target")
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encoded_file = os.path.abspath('encoded.txt')
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decoded_file = os.path.abspath('decoded.exe')
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common.execute(["c:\\Windows\\System32\\certutil.exe", "-encode", "c:\\windows\\system32\\cmd.exe", encoded_file])
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common.log("Decoding target")
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common.execute(["c:\\Windows\\System32\\certutil.exe", "-decode", encoded_file, decoded_file])
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common.log("Cleaning up")
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common.remove_file(encoded_file)
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common.remove_file(decoded_file)
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if __name__ == "__main__":
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exit(main())
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