Dot Killer Virus

 Virus Name:  Dot Killer 
 Aliases:     944, Point Killer, Dot Eater 
 V Status:    Rare 
 Discovered:  October, 1990 
 Symptoms:    .COM growth; removal of all dots (.) from display 
 Origin:      Koszalin, Poland 
 Eff Length:  944 
 Type Code:   PNCK - Parasitic Non-Resident .COM Infector 
 Detection Method:  ViruScan, AVTK, F-Prot, NAV, Sweep, 
                    IBMAV, NAVDX, VAlert, PCScan, ChAV, 
                    NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, 
                    NAV/N, IBMAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Dot Killer virus was isolated in Koszalin, Poland in October, 
       1990. It is a non-resident infector of .COM files, including 
       When a program infected with the Dot Killer virus is executed, the 
       virus will infect one other .COM file in the current directory. 
       Infected .COM files will increase in length by 944 bytes.  The virus 
       will be located at the end of infected files. 
       While the Dot Killer virus contains code to attempt to avoid 
       infecting the program pointed to by the COMSPEC environmental 
       parameter, this logic contains a bug and does not function 
       properly.  If COMMAND.COM, or the program pointed to by COMSPEC, is 
       located in the current directory it will become infected just like 
       any other .COM program. 
       When the Dot Killer virus activates, it will remove all dots (.) 
       from the system display. 
       Known variant(s) of Dot Killer are: 
       Dot Killer B: Similar to Dot Killer, Dot Killer B's major 
                     difference is at activation.  After booting from an 
                     infected COMMAND.COM, a happy face character will 
                     appear on the left side of the current screen line, 
                     then travel across the line to eat the period (.) the 
                     user attempted to type.  After eating the period, the 
                     happy face will travel back across the screen and 
                     disappear until the user types another period. 

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