Virus Database

Brezhnev.974

Description Brezhnev.974

It is a not dangerous memory resident encrypted parasitic virus. It traces and hooks INT 21h, then writes itself to the end of EXE files that are executed. On Sundays it displays a message in Russian.

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Hymn.2144

Description Hymn.2144

This is a very dangerous encrtypted memory resident parasitic virus. It hooks INT 21h, and writes itself to the end of COM and EXE files that are executed, closed, renamed or when the file attributes are changed.
When the date and month correspond in number (January 1st, February 2nd,all), this virus destroys a part of the system information in the C: disk boot sector, then it plays the former USSR national anthem, and decrypts and displays the picture.
When corrupting the boot sector, the virus sets the bytes to zero in the boot sector that contains the number of bytes in a sector, number of sectors in a cluster, number of FAT copies, etc - a total 9 bytes. If the boot sector of a computer running in the MS-DOS environment is changed in such a way, the computer remains unbootable both from the hard disk and the floppy drive. To restore information, it is necessary to use special utilities.

Hypnotiser.1784

Description Hypnotiser.1784

It is not a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. When anti-viruses AVP, WEB, DRWEB are executed, or Windows is started, the virus removes itself from the memory. The virus also does not infect the files AIDS*, ADIN*, ANTI*, e.t.c according to the string (four bytes per name):
AIDSADINANTIMSAVCOMMNAV.

The virus deletes the anti-virus database CHKLIST.MS. On 10th of any month depending on the system timer the virus manifest itself by a video effect. The virus also contains the text:
HYPNOTiSER. By bQNVvLA&|^JM :6'

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