Virus Database

NewModel.533

Description NewModel.533

It is a dangerous memory resident encrypted parasitic virus. It copies itself into the system memory at the address 8E70:0100, and does not fix MCB list, that may halt the system. Then the virus hooks INT 21h and writes itself to the beginning of .COM files that are executed or opened. The virus contains the text string:
New Model v1.1ß (c) 20.10.1994 Happy Virus Company

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Atas Family

Description Atas Family

These are non memory resident (except "Atas.1268") harmless viruses. One part of viruses body is encrypted. After getting start the viruses infect COM-files of current directory. When virus hits a file the message like "OK." or "I like to travelall" can appear on the screen. The viruses contain texts: "*.COM" and
"Atas.384": ATAS(Kiev) V3.03 Cr.91.10.11
"Atas.400": ATAS V0.1 Cr.24.01.92
"Atas.1268": ATAS Corporation.(C)Copyright (B)BadWare

"Atas.1268" is the memory resident virus. If the key PrintScreen is pressed then this virus "falls" all the letters on the screen. It also hooks INT 5, 21h.
Atas.3215,3233,3321
These are not dangerous memory resident encrypted stealth viruses. They hook INT 8, 10h, 16h, 1Ch, 21h and write themselves at the end of COM-files are accessed. These viruses contain the text strings:
bye
music
letters
isplay
Bye-Bye.
ATAS Corporation.(B)1992 ,V1 Created in the Kiev by ATAS.

These infectors check the keyboard input and compare the text entered with a words 'bye', 'music', 'letters', 'isplay'. They manifest themselves in case of word: 'music' - they play the tune; 'letters' - they 'drop' the screen letters; 'isplay' - they change the cursor position; 'bye' - they type 'Bye-Bye.' and remove the virus TSR part from the memory.

ATB.1522.a

Description ATB.1522.a

It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. Depending on its counter the virus displays the message:
Welcom jion in A block troop of Computer
This virus made by ATB(1991/4)

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