So I was fixing someone's computer who had gotten a nasty bit of malware/adware on his PC.
The malware is called Antivirus Action and it pops in the browser with the message: Internet Explorer Warning - visiting this web site may harm your computer!:
So in the browser, any website I would go to would show that webpage. All the options on it would take me this website where they would sell Antivirus Action, a fake antivirus program:
All the websites I went to said to download Malwarebytes Anti-Malware or Spybot Search and Destroy and the scan would remove the offending software. Well.. No such luck!
Solution? Finally Dennis F. at this website in the comments section said that he fixed it by downloading ComboFix, and indeed, that is the fix!
Such is the life of a voluntary PC Tech!