Virus Database

Psycho.723

Description Psycho.723

It is a very dangerous nonmemory resident virus. It overwrites all files of the current directory. It contains the text:
Oh, oh, oh, She's my cover girl,
Oh, oh, oh, oh, oh, oh
Oh, oh, oh, She's my cover girl,
Oh, oh, oh, oh, oh, oh
Cover Girl by The New Kids On The Block
Hangin' Tough (c) 1988 CBS Records
I luv Jordan
Written by (Psychogenius) 12/28/91
NKOTB JORDAN The Cover Girl Virus *.*

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TenBytes.1411

Description TenBytes.1411

This is a dangerous, memory resident parasitic virus. It hooks INT 21h, and writes itself to the end of COM and EXE files that are loaded into the memory. While infecting COM files, the virus writes the 32-byte Jmp-Virus routine to the beginning of the file. In infected EXE files, there are two possible variants of the entry offset in the virus code.
The virus activates only when the interrupt handler contains the word FC80h (this condition is always met if INT 21h points in DOS to the original system handler). Then the virus patches the first five bytes of the INT 21h handler with JMP FAR Loc_Virus instruction, copies itself to the system memory at the address 9800:0000, and does not fix the MCB list. This might halt the computer. The virus also hooks INT 1 and 3, and disables the debugger.
Starting from September 1st, while writing to the disk (INT 21h,AH=40h), the virus changes the address of the data buffer, and as a result, corrupts the data that is saved on the disk.

Tenerife.1707

Description Tenerife.1707

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 or opened. It contains the text string:
atan ucifer 66 enerife 1993

Depending on the system date the virus also hooks INT 9, 1Ch, and some time after manifests itself with several effects. While entering a key the virus puts the strings into the keyboard buffer:
'S' - "atan "
'L' - "ucifer "
'6' - "66 "
'T' - "enerife "

The virus also manifests itself with some sound effect.

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