Magician Virus

 Virus Name:  Magician 
 Aliases:     Keybug 
 V Status:    Rare 
 Discovered:  July, 1994 
 Symptoms:    .COM & .EXE growth; 
              decrease in total system & available free memory 
 Origin:      Unknown 
 Eff Length:  980 - 996 Bytes 
 Type Code:   PRhAK - Parasitic Resident .COM & .EXE Infector 
 Detection Method:  F-Prot, IBMAV, AVTK, ViruScan, Sweep, 
                    NAV, NAVDX, VAlert, 
                    AVTK/N, Sweep/N, NProt, IBMAV/N, NShld, NAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Magician virus was received in July, 1994.  Its origin or point 
       of isolation is unknown.  Magician is a memory resident infector of 
       .COM and .EXE files, including COMMAND.COM. 
       When the first Magician infected program is executed, this virus 
       will install itself memory resident at the top of system memory but 
       below the 640K DOS boundary, not moving interrupt 12's return.  Total 
       system and available free memory, as indicated by the DOS CHKDSK 
       program, will have decreased by 3,008 bytes.  Interrupts 09 and 21 
       will be hooked by the virus in memory. 
       Once the Magician virus is memory resident, it will infect .COM and 
       .EXE files when they are executed.  Infected .COM files will increase 
       in size by 980 bytes with the virus being located at the beginning of 
       the file.  Infected .EXE files will increase in size by 980 to 996 
       bytes with the virus being located at the end of the file.  The file's 
       date and time in the DOS disk directory listing will not be altered. 
       The following text strings are encrypted within the Magician viral 
               "The Black Magician. Copyright (c) 1991" 
               "KEYBUG from The Black Magician" 

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