W32.Mydoom.J@mm is an encrypted, mass-mailing worm that arrives as an attachment with either a .pif, .scr, .exe, .cmd, .bat, or .zip extension. The worm also contains keylogging capabilities.
Unlike previous Mydoom variants, W32.Mydoom.J@mm does not appear to act as a backdoor, and it is similar in functionality to W32.Mydoom.A@mm
This threat is written in C++ and is packed with UPX.
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