Memory Lapse Virus

Virus Name: Memory Lapse Aliases: Memory Lapse-323 V Status: Rare Discovered: June, 1993 Symptoms: .COM file growth Origin: Unknown Eff Length: 323 Bytes Type Code: PNC - Parasitic Non-Resident .COM Infector Detection Method: ViruScan, F-Prot, Sweep, AVTK, IBMAV, NAV, NAVDX, VAlert, PCScan, ChAV, NShld, Sweep/N, AVTK/N, NProt, IBMAV/N, Innoc, NAV/N, LProt Removal Instructions: Delete infected files General Comments: The Memory Lapse, or Memory Lapse-323, virus was submitted in June, 1993. Its origin or point of isolation is unknown. Memory Lapse is a non-resident, direct action infector of .COM programs, but not COMMAND.COM. When a program infected with the Memory Lapse virus is executed, this virus will infect three .COM programs located in the current directory. Infected programs will have a file length increase of 323 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 visible within the viral code in all Memory Lapse infected programs: "*ML.C?M COMMAND." "Memory Lapse.323A (05/28/93)" "Copyright (c) 1993 Memory Lapse" It is unknown what Memory Lapse may do besides replicate. Known variant(s) of Memory Lapse are: Memory Lapse-375: A later version of the Memory Lapse virus, this variant also infects three .COM programs when an infected program is executed. Infected programs will have a file length increase of 375 bytes with the virus being located at the end of the file. The following text strings are encrypted within the viral code and are not visible within infected programs: "*ML.C?M COMMAND." "Memory Lapse.375A (05/29/93)" "Copyright (c) 1993 Memory Lapse" Origin: Unknown June, 1993 See: Chromo 1.0