This is a destructive virus which was reported to be heavily in the
wild in Israel in early 1996. It was also found in the wild in
Finland in December 1996.
The virus activates on random dates. When this happens, it will
display this text and overwrites drive C:
Synchronizing drive C: (Do not interrupt this operation !): 100%
A later, 1536 byte variant is also known.
[Analysis: Mikko Hypponen, F-Secure]