Harm-1082 Virus

Virus Name: Harm-1082 Aliases: V Status: Rare Discovered: June, 1993 Symptoms: .EXE file growth; decrease in total system & available free memory Origin: USSR Eff Length: 1,082 - 1,098 Bytes Type Code: PRhE - Resident Parasitic .EXE Infector Detection Method: F-Prot, AVTK, IBMAV, Sweep, ViruScan, NAV, NAVDX, VAlert, PCScan, ChAV, AVTK/N, NShld, Sweep/N, NProt, IBMAV/N, Innoc, NAV/N, LProt Removal Instructions: Delete infected files General Comments: The Harm-1082 virus was submitted in June, 1993. It appears to be from the USSR. Harm-1082 is a memory resident infector of .EXE programs, though it does not infect very small files. When the first Harm-1082 infected program is executed, the Harm-1082 virus will install itself memory resident at the top of system memory but below the 640K DOS boundary, hooking interrupt 21. Total system and available free memory, as indicated by the DOS CHKDSK program, will have decreased by 1,472 bytes. Interrupt 12's return will not have been moved. Once the Hard Days virus is memory resident, it will infect .EXE programs when they are executed. Infected programs will have a file length increase of 1,082 to 1,098 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 in all Harm-1082 infected programs: "Eat me Lozinsky!" "Harmless v1.0, 10/06/92 Tyumen" It is unknown what Harm-1082 does besides replicate.