Virus Database

Cracky.596

Description Cracky.596

This is a memory resident parasitic virus. It writes the TSR part into the DOS data area, hooks INT 21h and infects by a standard manner the COM files upon their execution. It contains the mask string "*.com". On April, 1st it erases the disk C: FAT sectors, it also contains the text "Milena".

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OS2.Jiskefet

Description OS2.Jiskefet

It is a harmless nonmemory resident parasitic virus. It searches for NewEXE (LX) files, reads 2048 (800h) bytes from the file beginning, writes that data to the end of the file, and then writes itself to 2048 bytes of the file header. Then the virus creates a temporary file, copies the host file there, disinfects and executes that file. Then the virus returns control to the system.
While searching and infecting the files, the virus uses OS/2 calls:
DosExit DosChgFilePtr DosClose DosDelete DosFindClose DosFindFirst
DosFindNext DosNewSize DosOpen DosGetEnv DosRead DosWrite DosExecPgm

The virus contains the text strings:
Jiskefet
DOSCALLS
*.EXE
MK

OS2.MyName

Description OS2.MyName

This is a very dangerous, non-memory resident overwriting OS/2 virus. It is the first known virus infecting OS/2 executable files. Upon execution, it obtains the name of the host file, reads its code from there, then searches for NewEXE (LX) files and overwrites them. While infecting a file, the virus uses OS/2 calls:
DosExit DosClose DosFindFirst DosFindNext DosOpen DosGetEnv DosRead
DosWrite

and displays the messages:

My name is
--> infected

The virus also contains the text string:
VIRUS
DOSCALLS
*.EXE

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