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Well the number of hits on google can be a double edged sword, if I find zero or few hits on google I’m more suspicious rather than less suspicious, especially when they are in temp folders.

You could also check the offending/suspect file at: VirusTotal - Multi engine on-line virus scanner I feel virustotal is the better option as it uses the windows version of avast (more packers supported) and there are currently 32 different scanners.

Or Jotti - Multi engine on-line virus scanner if any other scanners here detect them it is less likely to be a false positive. Whichever scanner you use, you can’t do this with the file in the chest, you will need to move it out.

If it is indeed a false positive, add it to the exclusions lists (Standard Shield, Customize, Advanced, Add and Program Settings, Exclusions) and Restore it to its original location, periodically check it (scan it in the chest), there should still be a copy in the chest even though you restored it to the original location. When it is no longer detected then you can also remove it from the Standard Shield and Program Settings, exclusions.

Also see False Positives, how to report it to avast! and what to do to exclude them until the problem is corrected.

The c:\System Volume Information folder is a part of the system restore function it could be that a previous infection in a system folder was deleted causing it to be saved as restore point. I would say if there is any doubt you should clean it out so that in the future doing a system restore you don’t in inadvertently infect your system.

– Create Clean Restore Point - Clear old Restore Points.
Once you are clear of infection create a clean System Restore point:

  1. Click Start, All Programs, Accessories, System tools, System Restore.
  2. In the pop-up that appears fill in the radio button to Create a Restore Point
  3. Click NEXT
  4. Enter a useful name that you will remember if you need to find this again (Clean Restore Point)
  5. Click CREATE

You now have a clean restore point, you should clear the old ones:

  1. Click Start, All Programs, Accessories, System tools, Disk Clean Up
  2. Click OK on the C: drive
  3. Click the More Options tab
  4. In the System Restore section click the Clean Up button