This virus contains following text string:
HAIFA VIRUS V1.12 WRITTEN BY Y.S GUEST STARS T.S. & I.F. MADE IN ISRAEL I AM TIRED. PLEASE WAKE ME UP ON TUE 12.4.3456 PRESS RESET TO CONTINUE...
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
The virus searches specifically for files with ASM, PAS, TXT and DOC extensions (as well as COM and EXE).
ASM files have the first 76 bytes overwritten with a assembler routine which is designed (when assembled) to overwrite the beginning of the first hard drive with garbage.
PAS files have the first 23 bytes overwritten with the text:
CONST VIRUS= "HAIFA";
TXT and DOC files are corrupted by having text inserted at approximate half-way point:
OOPS! Hope I didn't ruin anything!!! Well, nobody reads those stupied DOCS anyway!
Although this virus has no stealth capability, it contains a self-modifying encryption routine such that each infection appears differently on disks.