Dont believe it. Did you run this "cross miner app"? It was a trojan. There is no telling what else it did, quite possibly a rootkit was installed too. Assuming you are being sincere and not the OP, the only safe course of action is format and reinstall. Consider something other than windows while you're at it.

Also, Im curious.. what was this cross-mining pool? where did you hear about it? How many other people where mining there?