Junior Virus

 Virus Name:  Junior 
 V Status:    Rare 
 Discovered:  December, 1992 
 Symptoms:    .COM file growth 
 Origin:      Bulgaria 
 Eff Length:  234 Bytes 
 Type Code:   PRaCK - Parasitic Resident .COM Infector 
 Detection Method:  AVTK, F-Prot, IBMAV, Sweep, ViruScan, 
                    NAV, NAVDX, VAlert, PCScan, ChAV, 
                    Sweep/N, NShld, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Junior virus was submitted in December, 1992.  It is originally 
       from Bulgaria.  Junior is a memory resident infector of .COM 
       programs, including COMMAND.COM. 
       When the first Junior infected program is executed, the Junior 
       virus will install itself memory resident in a "hole" in allocated 
       system memory at approximately 0000:0500.  Total system and available 
       free memory, as indicated by the DOS CHKDSK program, will not be 
       altered.  No interrupts are directly hooked by the virus. 
       Once the Junior 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 234 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.  One 
       text string is visible within the viral code in Junior infected 
       This text string occurs at or very near the end of the infected 

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