W32.Blebla.J.Worm is a variant of W32.Blebla.B.Worm
. W32.Blebla.J.Worm arrives as an email message that has an HTML body and two attachments: Melh32.exe and Melhw32.chm. When you read the message, the two attachments are automatically saved and launched. The worm then attempts to send itself to all contacts in the Microsoft Outlook Address Book and post messages to a newsgroup. The worm also alters registry keys so that it runs when certain types of files are viewed or executed.
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.