# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one # or more contributor license agreements. Licensed under the Elastic License # 2.0; you may not use this file except in compliance with the Elastic License # 2.0. from . import common from . import RtaMetadata metadata = RtaMetadata( uuid="f5c31db1-a376-47b3-9ba3-a946408e2bbc", platforms=["windows"], endpoint=[ {"rule_name": "Suspicious Parent-Child Relationship", "rule_id": "18a26e3e-e535-4d23-8ffa-a3cdba56d16e"}, {"rule_name": "Binary Masquerading via Untrusted Path", "rule_id": "35dedf0c-8db6-4d70-b2dc-a133b808211f"}, { "rule_name": "UAC Bypass Attempt via DismCore DLL Side-Loading", "rule_id": "38210b91-f593-4c1c-a582-e5309c5b5168", }, ], siem=[], techniques=["T1574", "T1055", "T1548", "T1036"], ) EXE_FILE = common.get_path("bin", "renamed_posh.exe") @common.requires_os(*metadata.platforms) def main(): dism = "C:\\Users\\Public\\Dism.exe" dllhost = "C:\\Users\\Public\\dllhost.exe" dccwpathdll = "C:\\Users\\Public\\a.dll" dccwpathdll2 = "C:\\Users\\Public\\DismCore.dll" powershell = "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe" common.copy_file(EXE_FILE, dism) common.copy_file(EXE_FILE, dllhost) common.copy_file(EXE_FILE, dccwpathdll) common.execute([dllhost, "/c", f"Rename-Item {dccwpathdll} {dccwpathdll2}"], timeout=10) common.execute([dism, "/c", powershell], timeout=2, kill=True) common.remove_files(dism, dllhost, dccwpathdll2) if __name__ == "__main__": exit(main())