Dark End Virus

 Virus Name:  Dark End 
 V Status:    Rare 
 Discovery:   December, 1992 
 Symptoms:    .COM & .EXE growth; TSR; overwrites beginning of C:; 
              interfers with screen display; system hangs 
 Origin:      Unknown 
 Eff Length:  1,188 Bytes 
 Type Code:   PRsAK - Parasitic Resident .COM & .EXE Infector 
 Detection Method:  AVTK, IBMAV, F-Prot, ViruScan, Sweep, 
                    NAV, NAVDX, VAlert, PCScan, ChAV, 
                    Sweep/N, NShld, Innoc, NProt, AVTK/N, LProt, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Dark End virus was submitted in December, 1992.  Its origin or 
       point of isolation is unknown.  Dark End is a memory resident 
       infector of .COM and .EXE programs, including COMMAND.COM. 
       When the first Dark End infected program is executed, the Dark End 
       virus will install itself memory resident as a low system memory 
       TSR of approximately 1,200 bytes, hooking interrupt 21.  It will 
       appear as part of the command interpretor in many memory mapping 
       Once the Dark End virus is memory resident, it will infect .COM 
       and .EXE programs, including COMMAND.COM, when they are executed. 
       Infected programs will have a file length increase of 1,188 bytes 
       with the virus being located at the end of the file.  The program's 
       date and time in the DOS disk directory listing will not be 
       altered.  The following text string can be found within the viral 
       code in all Dark End infected programs: 
               "(c) Dark End." 
       The Dark End virus activates when the first infected program is 
       executed after system boot on October 15th of any year.  At that 
       time, the virus will overwrite the first 30 sectors of the C: 
       Systems infected with the Dark End virus may also experience 
       interference with the system display, including unexpected clearing 
       of the screen and the cursor flickering.  System hangs may also 
       occur unexpectedly. 

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