Milena Virus

Virus Name: Milena Aliases: V Status: Rare Discovered: May, 1992 Symptoms: .COM & .EXE growth; decrease in total system & available free memory Origin: Unknown Eff Length: 1,160 Bytes Type Code: PRhAK - Parasitic Resident .COM & .EXE Infector Detection Method: ViruScan, AVTK, F-Prot, Sweep, NAV, IBMAV, NAVDX, VAlert, PCScan, ChAV, NShld, Sweep/N, Innoc, NProt, AVTK/N, LProt, IBMAV/N, NAV/N Removal Instructions: Delete infected files General Comments: The Milena virus was submitted in May, 1992. Its origin or point of isolation is unknown. Milena is a memory resident infector of .COM and .EXE programs, including COMMAND.COM. When the first Milena infected program is executed, the Milena virus will install itself memory resident at the top of system memory but below the 640K DOS boundary. Interrupt 12's return will not be moved. Total system and available free memory, as indicated by the DOS CHKDSK program, will have decreased by 1,184 bytes. Interrupt 21 will be hooked by Milena in memory. Also at this time, the Milena virus will infect COMMAND.COM if it was not previously infected. Once the Milena virus is memory resident, it will infect .COM and .EXE programs when they are executed or opened. Programs infected with the Milena virus will have a file length increase of 1,160 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 can be found within the viral code in Milena infected programs: "LOVE" "I Love Milena..." It is unknown if Milena does anything besides replicate.