Seneca-B Virus

 Virus Name:  Seneca-B 
 V Status:    Viron 
 Discovered:  January, 1993 
 Symptoms:    .COM & .EXE files overwritten; program & data file corruption; 
              boot failure; program date/time changes 
 Origin:      United States 
 Eff Length:  493 Bytes OW 
 Type Code:   ONAK - Non-Resident Overwriting File Infector 
 Detection Method:  ViruScan, Sweep, AVTK, F-Prot, IBMAV, NAVDX, 
                    NAV, VAlert, PCScan, ChAV, 
                    NShld, Sweep/N, Innoc, NProt, AVTK/N, LProt, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Seneca-B virus was submitted in January, 1993.  Seneca-B is 
       a non-resident overwriting virus which infects programs and data 
       files.  It corrupts the files it infects. 
       When a program infected with the Seneca-B virus is executed, the 
       Seneca-B virus will infect all of the files located in the 
       current directory by overwriting the first 493 bytes of the host 
       file.  The virus does not differentiate between program and data 
       files, so besides program corruption, data file corruption will 
       Programs and data files infected with the Seneca-B virus not have 
       an increase in file length as the virus will not infect a file 
       smaller than itself.  The file's date and time in the DOS disk 
       directory listing will have been updated to the current system 
       date and time.  The following text string is encrypted within the 
       Seneca-B viral code: 
               "*.* .." 

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