If your WIndows updates completed successfully, try again, as MS just pushed out the Decemeber updates to the Malicious Software Removal Tool...
(Run the Cmd Line as Admin, then type in " mrt "
If the newest MS tool can't catch it, then normally Malware Bytes Antimalware or Hitman Pro are the two defacto standard scanners that typically catch 99% 'dodgy stuff' each, and 99.9% with both....