Joshua Virus

 Virus Name:  Joshua 
 V Status:    Rare 
 Discovered:  October, 1992 
 Symptoms:    .COM & .EXE growth; message displayed 
 Origin:      Unknown 
 Eff Length:  965 Bytes 
 Type Code:   PNA - Parasitic Non-Resident .COM & .EXE Infector 
 Detection Method:  ViruScan, AVTK, F-Prot, Sweep, IBMAV, NAV, 
                    NAVDX, VAlert, PCScan, ChAV, 
                    NShld, Sweep/N, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Joshua virus was submitted in October, 1992.  Its origin or 
       point of isolation is unknown.  Joshua is a non-resident, direct 
       action infector of .COM and .EXE programs, but not COMMAND.COM. 
       When a program infected with the Joshua virus is executed, this 
       virus will infect two programs in the current directory.  It 
       prefers .EXE programs to .COM programs.  If it could not infect 
       two programs in the current directory, it will move upwards in 
       the directory structure looking for programs to infect. 
       Programs infected with the Joshua virus will have a file length 
       increase of 965 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. 
       Occassionally, the Joshua virus will display the following message 
       when an infected program is executed: 
                 Guess what ???                                 
                 You have been victimized by a virus!!! Do not  
                 try to reboot your computer or even turn it    
                 off.  You might as well read this and weep!    
       The above text is encrypted within the viral code, as is the 
       following additional text string: 
               "*.com *.exe .." 
       See:  PS-MPC 

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