Relzfu Virus

Virus Name: Relzfu Aliases: 233, Fake VIRx V Status: Rare Discovery: September, 1991 Symptoms: .COM file growth; "Specified COMMAND search directory bad" message on system boot Origin: Finland Eff Length: 233 Bytes Type Code: PNCK - Parasitic Non-Resident .COM Infector Detection Method: ViruScan, Sweep, AVTK, F-Prot, IBMAV, VAlert, NAV, NAVDX, PCScan, ChAV, NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, IBMAV/N, NAV/N Removal Instructions: Delete infected files General Comments: The Relzfu, or 233, virus was discovered in Finland in September, 1991. Relzfu is a non-resident, direct action infector of .COM files, including COMMAND.COM. When a program infected with Relzfu is executed, the virus will search the current directory for an uninfected .COM file to infect. Once an uninfected program is located, the virus will infect it, then the original program the user was attempted to execute will run. Programs infected with Relzfu will have a file length increase of 233 bytes with the virus being located at the end of the infected file. There will be no change in the file's date and time in the DOS disk directory. Two text strings can be found in infected programs: "ufzleR" "*.com" The first string has been used for the virus' name, with the string reversed. It is unknown if Relzfu does anything besides replicate.