Your PC also had a Backdoor trojan,Backdoor.Bifrose
This Trojan allows for its author to control a computer by using the Internet .The Trojan can update itself by checking for newer versions on the Internet.
Your PC is very likely compromised
and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of Trojan, the best course of action would be a reformat and reinstall of the OS. Even though the infection has been identified and quarantined all financial,password and account numbers that were stored on this PC should be considered stolen and changed.When Should I Format, How Should I Reinstall?
We will help you clean this PC but that would be a decision you have to make and there is no promise of future security without the format. Let us know how you wish to proceed.