Alabama Virus (20-FEB-1993) Entry...............: Alabama Virus Alias(es)...........: --- Virus Strain........: --- Virus detected when.: October 1989 where.: Israel Classification......: Resident, appending EXE infector. Length of Virus.....: 1) Length on media: 1408 bytes --------------------- Preconditions ----------------------------------- Operating System(s).: MS-DOS Version/Release.....: 2.xx and above Computer model(s)...: IBM PC, XT, AT and compatibles --------------------- Attributes -------------------------------------- Easy Identification.: --- Self Identification.: File create/edit time contains 63 seconds. First 4 bytes of memory are 0h. Type of infection...: Appends itself to the executed file. Infection Trigger...: Any INT 21h load/execute function-call. Storage media affected: All files on each locations. Interrupts hooked...: INT 21h function 4Bh (load and execute); INT 24h. Damage..............: Permanent damage: --- Transient damage: One hour after the start of an infected program, the following message will be displayed: "SOFTWARE COPIES ARE PROHIBITED BY INTERNATIONAL LAW", "Box 1055 Tuscambia ALABAMA USA" The message is encrypted by the NOT function. Damage Trigger......: Permanent damage: --- Transient damage: 1 hour after starting an infected program. Particularities.....: --- Similarities........: --- --------------------- Agents ------------------------------------------ Countermeasures.....: Skulasons F-PROT 2.06a, McAfee SCAN V99. Standard means......: Reboot and delete infected files. --------------------- Acknowledgement --------------------------------- Location............: Virus Test Center, University of Hamburg, Germany. Classification by...: Michael Haack Documentation by....: Michael Haack Date................: 01-FEB-1993 Information Source..: Virus-code analysis .