Avast Pro 4.1 found the Win32Klez-H on my PC. And for some reason it will not let me delete it! And I did a scan with another Antivirus and that did not even found a virus on my pc. What is going on here? Its the Demo version.
As i can se he is using CursorXP which means he has Windows 2000/XP. Just schedule Boot-Time scan. That parasite will go away without any problems with this one.
On the other hand, the boot-time scanner doesn’t support many archives - I’m not sure if UPX is supported. So, the boot-time scanner may not find it.
Klez-H (or its twin Elkern-C) is a file infector… so if it’s active, I’d expect more infected files to be found on the disk. Maybe it’s just a file that was infected previously, “disinfected” later, but piece of the virus code were left in the file…
In any case, you may also try the avast! Virus Cleaner.
Yes, because even if avast! cannot delete the file it will stop the process that is trying to access the file. Then the virus will not be executed. At least this is what I’ve been told and it seems right.
But I still think avast! should tell the user this more clearly, AND again - try even harder to free/unlock the file so that it can be deleted (is there functions in Windows to clear all file-locks?)