Vesser

Worm Vesser searches the Internet for PCs already infected by other worm - MyDoom. When it founds such hosts, it infects them. The worm installs itself to the computer and starts its spreading routine. It infects remote vulnerable PCs and distributes itself via the Soulseek file-sharing network. It also terminates running antivirus and security-related applications processes. Vesser contains a backdoor, which connects itself to the Internet and waits for remote connections.