Teraz.4004
Description Teraz.4004
It is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are accessed. Depending on its internal counter the virus erases the CMOS and displays the message:
TERAZ POLSKA v2.0
produced by NoName
All rights reserved.
(c)93.12.22 POLAND
Then it manifests itself with some video effect.
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Gwar
Description Gwar
It is a very dangerous memory resident encrypted and stealth boot virus. It hooks INT 13h and writes itself to the boot sector of diskettes and MBR sector of hard drive that are accessed. The virus copies its TSR copy to the interrupt table. From January 1st till 7th the virus displays a message and erases sectors on the hard drive, the message looks like follows:
Gwar virus by T-2000
Gyro.512
Description Gyro.512
It is a very dangerous non memory resident encipher virus. Then the infected file is started the virus overwrites all .COM-files of current directory. The old contents of the files are not saved and not restored. After it the virus types "Bad command or file name". It also contains the texts: "*.COM", "GURO".
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