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
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Snake.787
Description Snake.787
It is a dangerous nonmemory resident encrypted parasitic virus. It searches for EXE files on the current disk, then writes itself to the end of the file. On 26th of any month the virus displays a message and restarts the computer. The message is:
SnakeByte greetz
Sniper
Description Sniper
This is a dangerous, memory resident boot virus. It hooks INT 13h, and infects the MBR of the hard drive and boot sector on floppy disks. In September upon booting from an infected disk, the virus corrupts the CMOS and displays the following message:
MR.SNIPER -
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