Tobacco Virus

 Virus Name:  Tobacco 
 V Status:    Rare 
 Discovery:   April, 1992 
 Symptoms:    .COM & .EXE growth; TSR 
 Origin:      Unknown 
 Eff Length:  2,900 - 2,914 Bytes 
 Type Code:   PRsAK - Parasitic Resident .COM & .EXE Infector 
 Detection Method:  AVTK, F-Prot, ViruScan, IBMAV, ChAV, 
                    NAV, Sweep, NAVDX, VAlert, PCScan, 
                    NShld, Sweep/N, LProt, Innoc, AVTK/N, IBMAV/N, NAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Tobacco virus was received in April, 1992.  Its origin or 
       point of isolation is unknown.  Tobacco is a memory resident 
       infector of .COM and .EXE programs, including COMMAND.COM. 
       This virus is based on the Plastique virus. 
       When the first Tobacco infected program is executed, the Tobacco 
       virus will install itself memory resident as a low system memory 
       TSR of 3,152 bytes.  It will hook interrupt 21. 
       Once the Tobacco virus is memory resident, it will infect .COM 
       and .EXE programs, including COMMAND.COM, when they are executed 
       or opened.  With the exception of COMMAND.COM, infected .COM 
       programs will have a file length increase of 2,900 bytes with the 
       virus being located at the beginning of the infected file.  .EXE 
       programs infected by Tobacco will increase in size by 2,900 to 
       2,914 bytes with the virus being located at the end of the file. 
       COMMAND.COM will not have any file length increase when it 
       becomes infected by Tobacco. 
       The following text strings can be found in all Tobacco infected 
               "Tobacco v2" 
               "AntiDacha. 21193We don't want" 
               "gypsies in our" 
               "world. We don't" 
               "want DACHAs." 
               "1991 2nd Tabacalera gana siempre. Tobacco Ver. 2.0" 
       It is unknown what Tobacco does besides replicate. 
       Known variant(s) of Tobacco are: 
       Tobacco-B: Similar to the original Tobacco virus, this variant 
                  does not infect COMMAND.COM.  The text strings within 
                  the viral code have been changed to: 
                  "Tobacco v2" 
                  "We don't want" 
                  "gypsies in our" 
                  "world. DHC 1997" 
                  "ENIGMA MCMXCVIIII@TTF" 
                  "1991 2nd Tabacalera gana siempre. Tobacco Ver. 2.0" 
                  Origin:  Unknown  April, 1992. 
       See:   Plastique 

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