Dy Virus

Virus Name: Dy Aliases: V Status: Rare Discovered: September, 1993 Symptoms: .COM file growth; file date/time changes Origin: Unknown Eff Length: 278 Bytes Type Code: PNCK - Parasitic Non-Resident .COM Infector Detection Method: F-Prot, IBMAV, ViruScan, AVTK, PCScan, Sweep, NAV, NAVDX, VAlert, ChAV, NProt, NShld, Sweep/N, AVTK/N, IBMAV/N, Innoc, NAV/N, LProt Removal Instructions: Delete infected files General Comments: The Dy virus was submitted in September, 1993. Its origin or point of isolation is unknown. Dy is a non-resident, direct action infector of .COM programs, including COMMAND.COM. When a program infected with the Dy virus is executed, this virus will infect all of the .COM programs located in the current directory. If COMMAND.COM is in this directory, it will become infected. Programs infected with the Dy virus will have a file length increase of 278 bytes with the virus being located at the beginning of the file. The program's date and time in the DOS disk directory listing will have been updated to the current system date and time when infection occurred. The following text strings are visible within the viral code in all Dy infected programs: "DY" "*.COM" The "DY" text string occurs starting in the third byte of all infected files.