You have a very nasty infection present as you mentioned. Most experts think it's best to format because of this infection's nature. Take a read below please.Sality Infection Warning
Unfortunatly One or more of the identified infections is a backdoor trojan
This allows hackers to remotely control your computer, steal critical system information
and download and execute files
I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.
Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of trojan, the best course of action would be a reformat and reinstall of the OS. Please read these for more information:How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?When Should I Format, How Should I Reinstall
More information over here
Backup all your documents and important items (personal data, work documents, etc) only. DO NOT backup any executable files (softwares) and screensavers (*.scr). It attempts to infect any accessed .exe or .scr files by appending itself to the executable.
Also, try to avoid backing up compressed files (zip/cab/rar) files that have .exe or .scr files inside them. Virut can penetrate and infect .exe files inside compressed files too.
Tell me what you wish to do.
Edited by extremeboy, 14 February 2009 - 11:02 AM.