Necro Fear Virus

 Virus Name:  Necro Fear 
 V Status:    Rare 
 Discovered:  November, 1992 
 Symptoms:    .COM file growth; system hangs 
 Origin:      United States 
 Eff Length:  1,823 Bytes 
 Type Code:   PRaCK - Parasitic Resident .COM Infector 
 Detection Method:  ViruScan, F-Prot, Sweep, NAV, IBMAV, AVTK, 
                    NAVDX, VAlert, ChAV, PCScan, 
                    NShld, Sweep/N, NAV/N, AVTK/N, NProt, IBMAV/N, Innoc 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Necro Fear virus was submitted in November, 1992.  It is from 
       the United States.  Necro Fear is a memory resident infector of 
       .COM programs, including COMMAND.COM. 
       When the first Necro Fear infected program is executed, the Necro 
       Fear virus will install itself memory resident in low available 
       system memory, hooking interrupts 21 and 2F.  Total system and 
       available free memory, as indicated by the DOS CHKDSK program, will 
       not be altered. 
       Once the Necro Fear virus is memory resident, it will infect .COM 
       programs, including COMMAND.COM, when they are executed.  Infected 
       programs will have a file length increase of 1,823 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 strings are encrypted within the viral code: 
               "I am afraid that you have been bitten by the FEAR" 
               "bug.  Just think, you may have passed in on to all of" 
               "your friends!  What fun that will be when it goes off" 
               "all of their systems!" 
               "FEAR Copyright (c) 1992 NecroSoft Technologies" 
               "Developed in:" 
               "The Metropolis of Sodium Chloride in Hydrogeon Dioxide" 
       System hangs frequently occur on Necro Fear infected systems. 

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