Virus Database

Apadana.1500

Description Apadana.1500

It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the beginning of .COM files that are accessed by the FindNext FCB DOS function. On the 30th of any month or depending on the system timer the virus beeps, moves data on the screen, decrypts and displays the message:
My name is APADANA
I am a virus
version 1.3

APME.Demo.620

Description APME.Demo.620
APME is an ordinary polymorphic generator such as MtE and TPE. There is only one known virus APME.Demo that is included in APME.ZIP distribution package as APME.COM file. The virus opens APME.COM file, and overwrites it with new virus copy. Then the virus displays:
[_PME] Alpha PolyMorphic Engine by ViKing - Version 1.04b

Apo.2108

Description Apo.2108

It is a very dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the beginning of .COM and end of .EXE files that are executed. While infection of the files the virus renames them to the name X$X$$X$X.$X$, infects and then renames back to original name.
While infecting .EXE files the virus corrects several fields in EXE header: the virus increases the length of EXE header to cover original contents of the file. As a result the original file body is defined as EXE header, and while loading such file info the memory DOS loads only the virus body. Then the virus opens the host file, restores the fields in EXE header, executes host file, and then writes "infected" fields back to EXE header.
The virus also hooks INT 1Ch and some time after installation erases the disk sectors. The virus has the bugs, and in some cases halts the computer. The virus contains the encrypted text string:
ApoVir

Apocalipse.1685

Description Apocalipse.1685

It is a dangerous memory resident encrypted parasitic virus. It traces INT 13h, 21h, hooks INT 21h and writes itself to the end of COM and EXE files that are executed. While installing into the system memory it also infects the C:DOSMODE.COM file.
The virus writes the counter into hard drive sector and increases that counter each time the virus installs itself into the memory. After 100 installation the virus corrupts CMOS and MBR of the hard drive, and displays:
Apocalipse 2.0 por M.A.C.
Isto é um vírus - afaste-se do computador, sen¦o constipa-se !
Boa sorte nas reparaç_es - nada está perdidoall
Também, andavas a trabalhar demais - aproveita para descansar !
Lembra-te: coisas destas só ajudam a formar caracter - n¦o,
n¦o precisas de agradecer, é um prazer ajudar...
Voltarei...
Preme uma tecla

Apokalipsa.1167

Description Apokalipsa.1167

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. In year 2000 the virus decrypts and displays the messages:
Wellcome to 21st century.
Author (Martin Zdila - MATOSoft) wish you no viruses in your computer
(except me - APOKALIPSA). I (virus) was born in SLOVAKIA in 1997/98.
Don't panic, I am harmless virus what is waiting for APOKALIPSA.
Press any key to continue.
Oh my God allAPOKALIPSA is here !!!
ALL DATA ON YOUR DISK ARE DESTROYED, FOREVER !
... ha ha ha. I got you! Great
joke, isn't it ?!

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