I hope I am posting in the right place.
I have been doing some work on my sister's computer and she has been badly infected. She has found a worm and it looks as is there is a problem with scvhost. We have been cleaning the computer and using various tools, etc. Problem is we ran a backup to CD just when the problems started and I have also used my usb pen drive on her computer.
1) Will the backup be infected? How do we reload the files in the event of a complete crash without reloading the virus?
2) How do I find out if my pen drive is ok? I have tried various scan options and most of the antivirus software and the online scanner for scvhost don't allow for scanning of usb devises. I also understand that this particular trojan doesn't show up on most virus scans. I really don't want to lose the files on my pen drive and I don't want to infect any other computer. So is it possible that it has written itself into my files? How do I find out?
Hope you can help