Virus Database


BadBoy.1001.a

Description BadBoy.1001.a

This is a harmless memory resident parasitic encrypted virus. It hooks INT 21h and writes itself at the beginning of COM files are executed. This virus uses System File Table on infection. It is divided on 9 blocks of code and data (installation block, data block, INT 21h block e.t.c.). When the virus installs itself into the memory, 8 of these 9 blocks can be rearranged in any order depending on the system timer. On infection the virus saves encrypted image of its TSR copy into the file, so orders of code blocks in two infected file can be different.
The virus contains the text:
Make me better!
The Bad Boy virus, Version 2.0, Copyright (C) 1991

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Kyokushinkai

Description Kyokushinkai

It's a dangerous memory resident multipartite virus. On execution it infects MBR and installs itself into the memory. It hooks INT 12h, 13h, 1Ch, 21h and on execution of any program it searches for EXE-files and writes itself at their ends. It is stealth virus on accessing to infected MBR. Depending on system time it overwrites the disk sectors with the string:
+++++++ Kÿöküshïñkäï +++++++.- 39-mynrazCmeroizóJdanogewogninertuzoboogeintelóktáimapaN-OLYKaúysezrpuzoboogeúacaldainezcyºenzcedreS
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Kysia.1536
It's the variant of "Kyokushinkai" virus. This one hits first Boot-sector of hard drive. Depending on system time it displays the message:
(c) 1993 Kysia Software Co.
Your fucking PC is infected !
I'm formating your hard disk now.
I'm lucky.
FUCK'AM ALL
Bezplatna reklama kapeli ZOD ze Szczecina.

LA.802

Description LA.802

It is a harmless memory resident parasitic virus. It hooks INT 21h, 2Fh and writes itself to the end of COM-files that are executed, and SYS-files that are opened. The virus does not manifest itself in any way.
While installing the memory resident copy the virus uses "Are you here?" call with INT 21h, AX=FFFFh. The TSR copy returns "LA" in AX register.

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