Foamer, also known as Moaphie, is a worm that spreads through mapped network drives. Once executed, the parasite installs itself to the system and runs a payload. It disables the Task Manager and the Registry Editor, modifies some Windows settings and changes the Internet Explorer default home page. Foamer may also attempt to send e-mail messages and execute arbitrary files downloaded from the Internet. The worm runs on every Windows startup displaying fake error message.