Vitro and Sality are fileinfectors…this is like computer canser so this may be a format reinstall case :-\ depends how far it has spread
system files are often damaged after removal…

Malware experts are notified, it may take some hours before they arrive

some info to read - Miekiemoes: Director of Research @ Malwarebytes
http://miekiemoes.blogspot.no/2009/02/virut-and-other-file-infectors-throwing.html