Pexmor

Pexmor is an Internet worm that propagates by e-mail in messages with infected attachments. Once the user opens such an attachment, the spyware installs itself to the computer and runs a spreading routine. Pexmor uses its own mail engine to send malicious letters to numerous addresses. It also prevents some installed software from running on Windows startup. Although the worm doesn't carries any destructive payload, its activity may severely degrade overall computer performance and Internet connection speed. Pexomor secretly runs on every Windows startup or whenever the user composes an e-mail message.