Orphan.174
Description Orphan.174
It is a very dangerous memory resident multipartite virus. When an infected file is executed, the virus inserts its code into the MBR of the hard drive - the virus copies its code into free space in the MBR and patches the code of bootstrap loader to get control. Such way of infection is correct only for standard bootstrap routine, in case of specific code the virus will corrupt the MBR and the system will halt on next rebooting.
On loading from infected MBR the virus copies itself into Interrupt Vectors Table, hooks INT 13h and overwrites EXE files on floppy disks (when files are copied on floppy disk).
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Kadavr.506
Description Kadavr.506
It is a harmless memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of EXE files that are executed. The virus does not manifest itself in any way. It contains the text in Cyrillic:
Kadavr
Kai.301
Description Kai.301
This is a harmless nonmemory resident parasitic virus. It searches for COM files and writes itself to the end of the file. The virus contains the text string:
AVS v1.0(c)1997 'KAI
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