Virus Database

Oksana.1881

Description Oksana.1881

This is a very dangerous nonmemory resident parasitic encrypted virus. The virus searches for COM files then writes itself to the end of the file. The virus do not infects the COMMAND.COM file, but the string comparing utility has a bug, and the virus do not infect C*.COM files. If the virus detects a file that has COM extension and EXE internal format, the virus overwrites that file with a program that displays the message in Russian. Some viruses of that family disinfect the host file before return.
On October 21 the viruses display the message:
HAPPY BIRTHDAY OKSANA
Depending on the generation or counters the virus reads into the system memory and then erases the FAT of the C: drive and displays the message in Russian. Then the virus wait for 3:00am and restores the FAT.
It displays:
CRAZY ! I~m here !

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Kot.b

Description Kot.b

This is a dangerous memory resident boot virus. It hooks INT 13h, and writes itself to the BOOT sectors of floppy disks and to the MBR sector of the hard drive. On the 15th day of each month, the virus stops booting in a computer. The virus contains the text string:
Kot

Koths.2462

Description Koths.2462

It is a harmless memory resident parasitic polymorphic virus. It hooks INT 1Ah, 21h and writes itself to the end of COM and EXE files that are executed. The virus checks file names and does not infect the files: V3*, HW*, CO*, TV*, TB*, SC*, CL*, VP*.
The virus contains the text strings:
** [KOTHS.HWB virus] **
This is beta test version
Please.. tell me some bug in this virus
And I promise you that next version will be smaller,faster and have no bug
Of course,I will add side-effect into it :)
c u next time

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