Kunsr.168.a
Description Kunsr.168.a
It is a harmless memory resident parasitic virus. It copies itself to the Interrupt Vectors Table, hooks INT 21h and writes itself to the end of COM and EXE files that are executed. The virus does not manifest itself in any way. It contains the code that looks as the text string:
P- KunSR
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BlackMonday.1055
Description BlackMonday.1055
BlackMonday is a very dangerous memory resident virus. It hits COM and EXE files by a standard manner when they are started. It contains the following text:
Black Monday 2/3/90 KV KL MAL
On Mondays, after infection of a COM file, the virus formats the hard disk. The virus also hooks INT 21h.
Blacksun
Description Blacksun
It is a very dangerous memory resident encrypted boot virus. It hooks INT 13h and writes itself to the MBR of the hard drive and boot sectors on floppy disks that are the accessed. The virus contains an error: as a key value in decryption loop it uses error code that is returned on GetDiskParameters call. Different BIOS-es may return different values in error code, and as a result the virus halts on these PCs (with AMI BIOS, for example).
If the month number is equal with day number and current time is 0 seconds, the virus erases the CMOS memory. The virus contains the text:
BlackSun
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