MPS 3.2 Virus

Virus Name: MPS 3.2 Aliases: MPS-OPC 3.2 V Status: Rare Discovered: November, 1991 Symptoms: .COM file growth; file date/time change Origin: Poland Eff Length: 654 Bytes Type Code: PNCK - Parasitic Non-Resident .COM Infector Detection Method: ViruScan, Sweep, F-Prot, IBMAV, ChAV, NAV, AVTK, NAVDX, VAlert, PCScan, NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N Removal Instructions: Delete infected files General Comments: The MPS 3.2 virus was submitted in November, 1991. It is originally from Poland. MPS 3.2 is a non-resident, direct action infector of .COM programs, including COMMAND.COM. When a program infected with MPS 3.2 is executed, the virus will infect all .COM programs located in the current directory. If COMMAND.COM is located in this directory, it will be infected as well. MPS 3.2 infected programs will have a file length increase of 654 bytes with the virus being located at the end of the file. The program's date and time in the DOS disk directory will have been updated to the system date and time when infection occurred. The following text string can be found within the viral code in MPS 3.2 infected programs: "MPS-OPC 1991 v3.2" It is unknown if MPS 3.2 carries any destructive potential. Known variant(s) of MPS 3.2 are: MPS 3.2-B: Functionally equivalent to the original virus, this variant has one byte which differs. See: MPS 1.1 MPS 3.1 MPS 4.01 MPS II-754