Drop this like its an old can of spaghetti and get something that would have prevented this from ever happening. Go with ESET Smart Security, I guarantee to you that it would have prevented you from ever accessing the webpage or files that infected the system. It would have quarantined the threat in real time. If it didn't, Malwarebytes Pro (with real-time protection) would have. These two are a lethal combination for online threats, and I am positive you would never have wasted hours of time on this issue.