Lviv.600
Description Lviv.600
It is a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM files that are executed. The virus has a bug while installing memory resident - it does not leaves its copy in separated memory block, but in block of free memory. As a result, when any other program occupies this block, the system halts. The virus contains the ID-string:
Lviv
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Dron.1024
Description Dron.1024
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of EXE-files that are executed. Depending on its internal counters the virus displays some picture (corrupted?) and the message:
Moscow Institute of Physics and Technology (c) 1994
The virus also contains the text string:
* DRON Ver 1.00, PhysTech,(c) 1994 *
Drop.1131
Description Drop.1131
It is a memory resident harmless virus. It infects COM- and EXE-files by standard way when they are accessed. It hooks INT 1Ch and 21h. Depending on its internal counter the infector can drop letters on the screen.
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