sequence by host.id with maxspan=1s
 [network where host.os.type == "windows" and
  event.action == "connection_accepted" and destination.port == 445 and source.port >= 49152 and process.pid == 4 and
  source.ip != "127.0.0.1" and source.ip != "::1" and
  network.type == "ipv4" and not endswith(source.address, destination.address)]
 [file where host.os.type == "windows" and event.action == "creation" and
  process.pid == 4 and user.id : ("S-1-5-21*", "S-1-12-*") and file.extension : ("hta", "txt", "readme", "htm*") and
  file.path : "C:\\Users\\*" and
   /* ransom file name keywords */
    file.name : ("*read*me*", "*lock*", "*@*", "*RECOVER*", "*decrypt*", "*restore*file*", "*FILES_BACK*", "*how*to*")] with runs=3