I know that maybe I should have report it to avast for there detection and testing but as I said before, I had already uninstalled it and tried PC Tools free Firewall. I have run various test on PC Tools firewall like the leak test and a couple of others from the same website, and it passed all of them. So I was just happy that the potential virus/worm had gone. Maybe this was not the right choice as others have suggested different solutions to the problem but at the same time I am now happy that my PC’s are protected.