Dumb Virus

Virus Name: Dumb Aliases: Dumb.406 V Status: New Discovered: January, 1996 Symptoms: .COM file growth; file date/time seconds = "60" Origin: Unknown Eff Length: 406 Bytes Type Code: PRaCK - Parasitic Resident .COM Infector Detection Method: F-Prot, AVTK, IBMAV, PCScan, ChAV, NAV, NAVDX, ViruScan, Innoc, AVTK/N, IBMAV/N, NAV/N, NShld Removal Instructions: Delete infected files General Comments: The Dumb virus was received in January, 1996. Its origin or point of isolation is unknown. Dumb is a memory resident infector of .COM files, including COMMAND.COM. When the first Dumb infected program is executed, this virus will install itself memory resident in low available free memory, hooking interrupt 21. Total system and available free memory will not be altered. Once the Dumb virus is memory resident, it will infect .COM files when they are opened or executed, but not on copy. Infected .COM files will have a file length increase of 406 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 appear to be altered, though the seconds field will have been set to "60". The following text strings are visible within the viral code: "Dumá" "[filename] fuck" "trashes HD" It is unknown what the Dumb virus may do besides replicate.