Estonia Virus

Virus Name: Estonia Aliases: Estonia.400 V Status: New Discovered: July, 1995 Symptoms: .COM file growth Origin: Unknown Eff Length: 400 Bytes Type Code: PNCK - Parasitic Non-Resident .COM Infector Detection Method: VAlert, AVTK, NAV, NAVDX, ViruScan, IBMAV, F-Prot, PCScan, ChAV, AVTK/N, NAV/N, IBMAV/N, NShld, Innoc Removal Instructions: Delete infected files General Comments: The Estonia virus was received in July, 1995. Its origin or point of isolation in unknown. Estonia is a non-resident, direct action infector of .COM files, including COMMAND.COM. When a program infected with the Estonia virus is executed, this virus will infect all of the .COM files located in the current directory. Infected files will have a file length increase of 400 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 viral code: "*.COM" "Your drives were on the Estonia... They DIDN'T survive!!!" The text string "ES" can also be found starting in the fourth byte of all infected files.