It appears to me the Backdoor.ProRat
trojan is communicating from your PC to it's host.
is designed to exploit a vulnerability in a system, and open it to future access by an attacker.
In other words they are using your PC at their will. You should consider that this PC is compromised and not to be trusted. The best course of action here as recommended by many security experts is a full format of the hard drive(s).
Please read.. When should I re-format? How should I reinstall?
If you have any passwords or account numbers (financial,Credit card etc...)on this PC, I would consider them stolen . You will need to change them.
If you want to we can continue to cleann this PC,but we can not even promise you that it will be trustworthy.
Please tell us of your decision on how you would care to proceed.