VM Family
Description VM Family
These are harmless nonmemory resident parasitic polymorphic viruses. They search for .COM files, then writes itself to the beginning of the file. The virus do not manifest themselves in any way.
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ProtoVirus Family
Description ProtoVirus Family
These are not dangerous memory resident parasitic viruses. They hook INT 21h and write themselves to the end of .COM files that are executed. The viruses contain the text string:
** ProtoVirus v1.0 by Chr'92 **
and check it while installing into the system memory. If that string is altered, the viruses halt the computer.
Prowler.1543
Description Prowler.1543
These are relatively harmless, memory resident encrypted multipartite viruses. They infect the MBR of the hard drive and write themselves to the end of COM (except COMMAND.COM) and EXE files that are executed, and the viruses hook INT 21h to do that. The MBR is infected when an infected file is executed. To install the TSR copy while loading from an infected MBR, the viruses also temporarily hook INT 1Ch (timer).
Upon loading from infected MBR on 13th of any month, the viruses manifest themselves as a sound and video effect and display the following message:
I am +he Midnigh+ Pr0wler, s0n 0f +he m00n
And I am the child 0f +he ?? genera+i0nall.
where ?? is virus generation.
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