NKTU_LUH
Description NKTU_LUH
It is a dangerous memory resident boot virus. It copies itself at the address 8F00:0000 (it causes system crash in lot of cases), hooks INT 13h, 1Ch and writes itself into MBR of hard drive and floppy boot sectors. In some cases it erases disk sectors and displays the message:
NCTU LYH
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Afori.656
Description Afori.656
It is not a dangerous memory resident parasitic virus. It hooks INT 1Ch, 21h and writes itself to the end of COM and EXE files that are executed. Depending on the system timer the virus drops the letters on the screen (see "Cascade"). The virus contains the text string:
A41a5
AFV.517
Description AFV.517
It is a harmless memory resident parasitic virus. It hooks INT 21h and writes itself to the beginning of .COM files (except COMMAND.COM) that are accessed. The virus does not manifest itself in any way. The header of infected files contains the text:
AFV
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