Welcome to the Virus Encyclopedia of Panda Security.
|Effects: ||It infects Word documents with macros.
|Detection updated on:||Nov. 13, 2002|
Class.O3 is a macro virus that infects Word files and the NORMAL.DOT global template used by this application.
In order to carry out its infection, Class.O3 infects the NORMAL.DOT global template. By doing this, all the Word documents used on the infected computer, which use this template, will also be infected.
Note: The 'O' that appears before the 3 is not the number zero but the letter O.
Class.O3 is difficult to recognize as it does not display any warnings or messages that indicate that it has infected a computer.