Tanpro Family
Description Tanpro Family
These are memory resident parasitic viruses. They hook INT 21h and write themselves to the beginning of COM and EXE files that are executed. The viruses contain the text string:
(c)tanpro'94
"Tanpro.524" is a harmless virus, it does not manifest itself in any way. "Tanpro.749" depending on its internal counters "shakes" the screen. It also contains the text:
Screen Shaker 5th
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Enter.613
Description Enter.613
It is a dangerous memory resident parasitic virus. It hooks INT 9, 21h and writes itself to the end of EXE files that are accessed. By hooking INT 9 (keyboard) the virus calculates ENTER keystrokes and on the 100th ENTER reboots the computer.
Enterprise.625
Description Enterprise.625
This is a benign memory resident parasitic virus. It hooks INT 21h, and writes itself to the end of COM-files that are executed. On December 6, it decrypts and displays the following message while halting the system:
CPU error
System halted
It contains the internal text string:
ENTERPRISE 2
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