Chimp
Description Chimp
It is not a dangerous memory resident encrypted and stealth boot virus. It hooks INT 13h and writes itself to the MBR sector on the hard drive and boot sectors of floppy disks that are accessed. The virus locates in the memory in the DOS Interrupt Vectors table. The virus does not manifest itself in any way.
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Quandary
Description Quandary
It is a harmless memory resident stealth boot virus. The code of the virus is partly encrypted. The virus hooks INT 13h and writes itself to the MBR of the hard drive and boot sectors of the 1.44M floppy disks. The virus checks the disks for some program (boot driver? some other boot virus?), and infects these disks without alteration of the original boot sectors.
Quark.1600
Description Quark.1600
It is not a dangerous memory resident parasitic virus. It hooks INT 15h, 21h and writes itself to the end of COM and EXE files that are executed. By hooking INT 15h the virus intercepts keyboard on old-style (PC-286) computers and changes keyboard data. The virus contains the text strings:
smothered to inertness by bendelosangeles Arg~AdeN
If this string is changed, the virus deletes the host file.
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