Jihuu.621

Classification

Malware

Virus

-

Jihuu.621, 621

Summary

This virus activates on Friday the 13th displaying the message:

"Something wonderful has happened, your PC is alive".

When it is on the 4th day of any month it shows the message:

"Water detected in match-co-processor".

Removal

Automatic action

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.

Suspect a file is incorrectly detected (a False Positive)?

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 detection database 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.

Find out more

Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

Contact Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

Jihuu will activate in the year 2000. Then it tries to overwrite the hard disk and displays:

"PARITY ERROR System halted".

Variant:Jihuu.686

Size:686

This variant was found almost three years after the variant 621 - in May 1994. The operation of the virus is identical, but the text messages have been encrypted with XOR FFh operation.