I know this thread is a month old, but thought I could add my 2 cents. I had a nasty bug that was redirecting my search engine results other commercial sites. I did endless research and found A LOT of people had this same problem w/ a "Google Redirect Virus". I love malwarebytes - It's saved my ass on more than one occasion and routinely finds stuff that both Mcafee and Avira don't find. However in this case it was coming up empty. I saw that a lot of people had used Hitman Pro so I figured I should give it a try since literally nothing I had tried had been able to detect anything at all, yet I knew there was something messing w/ my system. Once I downloaded it, it scanned which took all of 5 minutes. It found a single virus that no other antivirus had detected, it deleted it and thank goodness I no longer have to deal with randomly redirecting links anymore. Anyway - malwarebytes is awesome, but in this particular case of the mysterious google redirect virus, Hitman pro did the trick.