Scan reaching W32.Korron.B, then stays there forever

I recently had some slowdown with my PC starting up, so I ran a full system scan to check if there was any problem here. The scan happens just fine until I get to about 2800 files where it begins to scan for W32.Korron.B.

I left it for an hour, two hours, four hours and its still stuck on this part of the scan. I tried the quick scan and the same thing happened, two hours being too long for a normal quick scan, especially when it gets nowhere finished.

I can't see why I would have W32.Korron.B, but I can't help but feel a little paranoid as to why it's taking so long on this part of the scan. I can't even see if I have anything else as the scan would move on from this point.

If anyone has any advice as to what's going on and can provide me with any help, I'd be very grateful.