TMTM Virus

 Virus Name:  TMTM 
 Aliases:     Two Minutes To Midnight 
 V Status:    Rare 
 Discovery:   October, 1992 
 Symptoms:    .COM file growth; file date/time changes; system hangs 
 Origin:      England 
 Eff Length:  441 Bytes 
 Type Code:   PNCK - Parasitic Non-Resident .COM Infector 
 Detection Method:  ViruScan, AVTK, F-Prot, Sweep, IBMAV, PCScan, 
                    NAV, NAVDX, VAlert, ChAV, 
                    NShld, Sweep/N, Innoc, NProt, AVTK/N, LProt, NAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The TMTM, or Two Minutes To Midnight, virus was received from 
       Manchester, England in October, 1992.  TMTM is a non-resident 
       direct action infector of .COM programs, including COMMAND.COM. 
       When a program infected with the TMTM virus is executed, this 
       virus will infect one .COM program located in the current directory. 
       A system hang may then occur.  Infected programs will have a file 
       length increase of 441 bytes with the virus being located at the 
       end of the file.  The file's time in the DOS disk directory listing 
       will have been altered to 11:58p, or two minutes to midnight.  One 
       text string is encrypted within the viral code: 
       System hangs frequently occur on infected systems. 

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