True, and in fact a bit of searching turned up this tidbit. Now, I'm still not sure this is your problem Calax, as it does not look like a common BIOS virii issue, they mainly try to tell you that your system is infected with a fake virus and that you need to buy their fake cure as far as I can tell, -it also seems an odd virus for a .torrent file as many of those are keyloggers or the like- but it is nice to know that they are out there. It seems that re-flashing the chip might work if this were the problem as well but I'm not sure you should try that unless you know that a virus is the issue.
I would use a system that is not the target type if an infection is suspected although, yes, you could use a non-Linux system.