This is a typical boot sector virus, which was reported to be in the wild in Estonia in December 1995. Virus contains no text, although texts 'Gnu', 'Gru', 'Gtt' and 'Gpu' can be seen in it's code. These are, however, part of the virus code and not text messages.
Int_AA was also reported to be in the wild in France in March 1996.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Description Created: Mikko Hypponen, F-Secure