Mystic-377 Virus

Virus Name: Mystic-377 Aliases: V Status: Rare Discovery: June, 1993 Symptoms: .COM file growth; program execution failure Origin: Unknown Eff Length: 377 Bytes Type Code: PNCK - Parasitic Non-Resident .COM Infector Detection Method: ViruScan, F-Prot, AVTK, IBMAV, Sweep, NAV, NAVDX, VAlert, PCScan, ChAV, NShld, NProt, AVTK/N, Sweep/N, IBMAV/N, Innoc, NAV/N Removal Instructions: Delete infected files General Comments: The Mystic-377 virus was submitted in June, 1993. Its origin or point of isolation is unknown. Mystic-377 is a non-resident, direct action infector of .COM programs, including COMMAND.COM. When a program infected with the Mystic-377 virus is executed, the Mystic-377 virus will infect one .COM file located in the current directory. The user will usually then be returned to the DOS prompt. Programs infected with the Mystic-377 virus will have a file length increase of 377 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 strings are encrypted within the Mystic-377 viral code: "'Mystic' by Digital Alchemy" "*.COM" Known variant(s) of Mystic-377 are: Mystic-379: Functionally similar to the orginal virus, this variant adds 379 bytes to the .COM programs it infects. The same text strings are encrypted within the viral code. Origin: Unknown January, 1994.