eric-forte-elastic
64 lines
2.1 KiB
Python
64 lines
2.1 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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# Name: Suspicious IQY/PUB File Writes
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# RTA: iqy_file_writes.py
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# ATT&CK: T1140, T1192, T1193
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# Description: Generates four file writes related to file extensions (PUB, IQY)
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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="71f67037-1df3-4d5f-b8cb-eaf295ad16ed",
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platforms=["windows"],
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endpoint=[],
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siem=[],
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techniques=[]
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)
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@common.requires_os(*metadata.platforms)
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def main():
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common.log("Suspicious File Writes (IQY, PUB)")
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adobe_path = Path("AcroRd32.exe").resolve()
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msoffice_path = Path("winword.exe").resolve()
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browser_path = Path("iexplore.exe").resolve()
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common.copy_file(common.CMD_PATH, adobe_path)
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common.copy_file(common.CMD_PATH, msoffice_path)
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common.copy_file(common.CMD_PATH, browser_path)
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common.log("Writing files")
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# write file as adobe, then run it
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common.log("Creating a 'suspicious' executable")
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bad_path = Path("bad.exe").resolve()
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# PDF writing IQY file
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fake_iqy = Path("test.iqy").resolve()
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common.execute([adobe_path, "/c", "echo", "test", ">", fake_iqy])
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# PDF writing PUB file
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fake_pub = Path("test.pub").resolve()
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common.execute([adobe_path, "/c", "echo", "test", ">", fake_pub])
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# Winword writing IQY file
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fake_doc_iqy = Path("test_word.iqy").resolve()
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common.execute([msoffice_path, "/c", "echo", "test", ">", fake_doc_iqy])
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# Browser writing IQY file
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fake_browser_iqy = Path("test_browser.iqy").resolve()
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common.execute([browser_path, "/c", "echo", "test", ">", fake_browser_iqy])
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# cleanup
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common.remove_files(adobe_path, bad_path, fake_iqy)
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common.remove_files(adobe_path, bad_path, fake_pub)
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common.remove_files(msoffice_path, bad_path, fake_doc_iqy)
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common.remove_files(browser_path, bad_path, fake_browser_iqy)
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if __name__ == "__main__":
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exit(main())
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