This is a German-only macro virus, which was found in August 1996.
It consist of two macros (Dateisprechen and Bueroneu) and replicates
only under German versions of Word.
Buero deletes DOC files and renames C:\IO.SYS to C:\IIO.SYS (making
the machine unbootable) after 15th of August, 1996.
Buero was found in the wild in Germany in August 1996.
[Analysis: Mikko Hypponen, F-Secure]