Summary
This virus is written by the same authors as the Shake, MG and DIR viruses. It uses an unique method to infect files, as it does not change the files, but only the directory entries.
DIR-II is a full stealth virus, but F-Secure anti-virus products will detect it from memory and will advice you to boot from a clean diskette. If you analyze your hard drive after booting clean, you will see that all infected executables are cross-linked. Don't try to correct this.
DIR-II can be disinfected by renaming all executables to non-executable extensions while the virus is active, then booting clean and renaming them back. After this, run chkdsk.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
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