“Trojan.Fakefrag” is a variant of “scareware,” also called “rogueware” software that pretends to be legitimate but is just a sales pitch. Most scareware masquerades as antivirus software. The con is a new kind of scareware that impersonates a hard drive cleanup suite that repairs disk errors. The fake utility ends up on a Windows PC after its user surfs to a poisoned site and falls for a download pitch. The malware kicks off the scam by moving all the files in some folders to a temporary location, by hiding others.”]
Source: https://www.csoonline.com/article/2126316/windows-scareware-fakes-impending-drive-disaster.html