Another new variant of MyDoom worm - Mydoom.T, was found on September 3rd, 2004. This worm variant is similar to previous ones. It spreads in e-mails with different subject and body texts, to Kazaa P2P (peer-to-peer) file sharing network and also drops a backdoor component that listens on port 5422. Additionally the worm can perform a DDoS (Distributed Denial of Service) attack against Microsoft's website.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.