Threat Description

XA1

Details

Aliases: XA1, Christmas Tree, Tannenbaum
Category: Malware
Type: Virus
Platform: W32

Summary



The XA1 virus overwrites the beginning of files with itself and stores the original code at the end of the file. On April 1st, a part of the virus will activate - overwriting the boot sector with code that will cause the computer to "hang" on next boot-up. The virus will also activate on December 21st and stay active until the end of the year. It will then display a Christmas tree, and the text:

Und er lebt doch noch: Der Tannenbaum! Frohe Weihnachten



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



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