I have a client's computer which came with a USB hard disk used for backups. The USB disk is infected with win32:onlinegames-caz(trj). When I connect it to a computer for malware cleanup it immediately infects the computer. As I boot, Avast immediately gives a malware alarm, showing the sources to be in c:\windows\system32\amvo0.dll.
I ran numerous scans with Avast, Avg antispyware, Spyware Terminator, vundofix, smitfraudfix and Spybot. Except for Avast no program found the trojan. No program, including Avast, could remove it.
Eventually I got rid of it quite easilly with HJT. The problem is that the bug remains in the external disk and it immediately infects the computer again. I can't locate it on the disk. It only shows itself in the infected computer.
My question: how can I clean the external hard disk to avoid further infections.
Thanks in advance
Edited by The Skeptic, 21 February 2008 - 02:01 AM.