F-Secure Virus Descriptions : Jihuu.621
This virus activates on Friday the 13th displaying the message:
"Something wonderful has happened, your PC is alive".
When it is on the 4th day of any month it shows the message:
"Water detected in match-co-processor".
Jihuu will activate in the year 2000. Then it tries to overwrite the
hard disk and displays:
"PARITY ERROR System halted".
This variant was found almost three years after the variant 621 - in
May 1994. The operation of the virus is identical, but the
text messages have been encrypted with XOR FFh operation.
[Analysis: Mikko Hypponen, F-Secure]
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