Okay aftermath here.
I am amazed how it succeeded to infect a zillion of files within just about 8 hours, which is how long this windows installation lives. I deleted it everywhere antivirus had found it and am doing some additional scans. I will be looking for the reason why it actually had happened. I have some assumptions but won't do/tell anything before I am sure. (it is always hard to point anywhere)
Damage: huge. Almost all EXE files removed from the computer. Many programs to be reinstalled. It is an irony that it even destroyed my instance of borland c++ compiler, which was used to finalize it (yes, this virus has been finalized in bcc32).
As well, I had a ROFLMAO when I saw the virus infected even my own 3D engine executable. I hate the bastard who has made it, that's sure.
Anyway, the myth about how I do not need an antivirus has been busted. For now I will definitely keep this AVG for it has done a good job.
