The Magistr virus (code name W32/Magistr.b@MM, I-Worm.Magistr.b.poly or PE_MAGISTR.B) is a polymorphic worm (a worm whose shape, or more precisely signature, is constantly changing) which spreads using email. It is a variant on the Disemboweler worm (Magistr.A) and mainly affects users with the Microsoft Outlook, Eudora or Netscape email client in the operating systems Windows 95, 98, Millenium and 2000.
The Magistr.B virus searches the system for address book files (extension .WAB for Outlook and .DBX/.MBX for Eudora), in order to choose recipients to send the message to.
The subject and body of the email sent by the Magistr worm are chosen at random, by taking an extract from a file on the infected computer's hard drive.
The Magistr virus attaches a copy of itself to the message, with a filename containing an extension of one (or two) of the following types: .com, .bat, .pif, .exe or .vbs.
The Magistr worm may also delete all data found in:
Because of this, the Magistr.B virus may cause serious damage to your system and the information found on it.