Threat Encyclopedia

Selected viruses, spyware, and other threats: sorted alphabetically


W97M/Groov.B is a polymorphic macro virus operating in the Microsoft Word 97 SR-1 environments. It attacks active documents and the global template This macro virus is able of spreading independently of the global template by means of the file From the viewpoint of function it is identical with the virus W97M/Groov.A.
Polymorphic algorithm of the virus inserts lines with commentary after each line of virus code. The virus creates the commentaries by putting together Word user’s initials, current date and time, random number, name of the Word user and the active printer. A commentary like this looks as follows:

' Doc6/7/98 1:07:21 PM422Doc422HP LaserJet 4 on LPT1:

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