Folder Eating Virus

Trojan.Win32.Delf.aam isn't really a folder eating virus. But it does hide the original folders, then copies itself to the folder's original location using the same name as the original folder. When antivirus comes along and does its job - deleting the Trojan - some believe the antivirus is actually deleting their original folders. For details and remediation, see: How to Remove Trojan.Win32.Delf.aam and Recover Your Folders.