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Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

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Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:MTX
Technical name:W32/MTX
Threat level:Medium
Alias:I-worm/MTX,, W32/MTX@MM, W32/MTX, W32/Apology.B
Effects:  It infects Windows files in PE format, with the extensions EXE, DLL, DCX, SCR, CLP, etc.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

Detection updated on:May 28, 2007
Proactive protection:
Yes, using TruPrevent Technologies
Repair utility:Panda QuickRemover

Brief Description 


MTX is a worm that reaches computers in a file attached to an e-mail with a PIF, EXE or SCR extension.

Its strategy for avoiding detection is passing itself off as a harmless music file or photograph, which will have a variable name and will generally be related to a famous person like Bill Gates, Jimi Hendrix, Metallica, etc.

MTX spread automatically and very rapidly by sending itself to all the contacts in the Address Book, except those that correspond to antivirus companies. It main effect is that it infects executable files.

Visible Symptoms 


MTX reaches computers in an e-mail message with an attachment that can be identified by the following characteristics:

  • Name: variable. Below are some examples:



  • Extension:
    EXE, SCR or PIF.

For more information, consult the section Means of transmission.