Worms detected only when Erasing wastebasket beyond recovery

No viruses or worms were or are detected on any internal or external disk of my laptop by Avast 4.8 Home Edition. But when I Erase the wastebasket beyond recovery with CyberScrub, some worms, Trojan horses and viruses are detected by Avast, for example Win32:Hupigon-AEL. It seems that the detected Trojan horses have something to do with .jpg files. Is this a false alarm or is there a problem with a normal scan? Thanks in advance for your replies.

What is the infected file name, where was it found e.g. (C:\windows\system32\infected-file-name.xxx) ?
Check the avast! Log Viewer (right click the avast ‘a’ icon), Warning section, this contains information on all avast detections.

You could also check the offending/suspect file at: VirusTotal - Multi engine on-line virus scanner and report the findings here. You can’t do this with the file securely in the chest, you need to extract it to a temporary (not original) location first, see below.