McAfee Stinger is a standalone utility used to detect and remove specific viruses. Video tutorial available.Note that this is not a stand-alone anti-virus product to protect your system but more of a specialized tool to try to remove viruses from already infected systems. It's a niche tool that any tech would want to have on their thumb drives, etc. We have had success with it. There is a FAQ is available here and recommended if you don't use tools like this on a regular basis.By default, it scans for rootkits, running processes, loaded modules, registry and directory locations known to be used by malware on a machine to keep scan times minimal.It can be easy to use as this video tutorial shows.