Infected component.old. Can I delete?

[joey3155]

I did a routine scan, uneventful and found that a trojan had snuck into C:\Windows\System32\Config\Regback\Components.old. I wanted to move the file to Avast's virus chest but despite making the chest capacity unlimited and increasing the send file size to double componets file size I can't put it in the chest so my question is can I delete it? Or will that mess up my system. So far it hasn't done anything but I want to get rid of it to keep my system safe. It was identified as Win32: Vidlo-AH.

Edit: I restarted my PC as Avast sucked up alot of memory during the night as I left it running to do it's thing. I came back and rescanned the supposedly infected file and it's not giving me a virus alert anymore. Whats up with that?

[Lisandro]

Which is the size of the file?
The extension (.old) seems to make this file ok to be deleted.

Edit: I came back and rescanned the supposedly infected file and it's not giving me a virus alert anymore. Whats up with that?

Could it be a false positive... strange...

[joey3155]

23,004 KB to be precise.

[Lisandro]

23,004 KB to be precise.

So, it's not a reason to not being moved to Chest.
Are you sure the message wasn't that the file was being used (access denied)?

[joey3155]

Yep, I'm sure. And the hard drive it's on has around 30 GB free, and the virus chest was set to unlimited capacity and the send file size to around 50,000 KB. I just tried scanning it now it still gives me no warning and I reboot the PC myself 2-3 times since this morning when this problem first appear (I did so for various reasons) and none of my other scanners (SuperAntiSpyware, Spybot S&D, Spyware Doctor) detected it. So what I plan to do is another through scan of the entire hard drive tonight and see if that file shows up again in the next scan.

[Lisandro]

Seems you're clean.
A further check could be done with MBAM or DrWeb CureIT!.