Alpha-743 Virus

 Virus Name:  Alpha-743 
 V Status:    Rare 
 Discovery:   March, 1993 
 Symptoms:    .COM file growth; system hangs 
 Origin:      Unknown 
 Eff Length:  743 Bytes 
 Type Code:   PNCK - Parasitic Non-Resident .COM Infector 
 Detection Method:  Sweep, AVTK, ViruScan, F-Prot, IBMAV, 
                    NAV, NAVDX, VAlert, PCScan, ChAV, 
                    Sweep/N, NShld, NProt, AVTK/N, Innoc, NAV/N, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Alpha-743 virus was submitted in March, 1993.  Its origin or 
       point of isolation is unknown.  Alpha-743 is a non-resident, direct 
       action infector of .COM programs, including COMMAND.COM. 
       When a program infected with the Alpha-743 virus is executed, the 
       Alpha-743 virus will infect one .COM program located in the current 
       directory.  If an uninfected .COM program does not exist in this 
       directory, a system hang will occur with the virus accessing the 
       current drive. 
       Programs infected with the Alpha-743 virus will have a file length 
       increase of 743 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 string is encrypted 
       within the viral code in Alpha-743 infected files: 
               "*.com *.*" 

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