Startup Folder Persistence via Unsigned Process

sequence by host.id, process.entity_id with maxspan=5s
  [process where host.os.type == "windows" and event.type == "start" and process.code_signature.trusted == false and
  /* suspicious paths can be added here  */
   process.executable : ("C:\\Users\\*.exe",
                         "C:\\ProgramData\\*.exe",
                         "C:\\Windows\\Temp\\*.exe",
                         "C:\\Windows\\Tasks\\*.exe",
                         "C:\\Intel\\*.exe",
                         "C:\\PerfLogs\\*.exe")
   ]
   [file where host.os.type == "windows" and event.type != "deletion" and user.domain != "NT AUTHORITY" and
    file.path : ("C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
                 "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\StartUp\\*")
   ]