Virdem

Classification

Malware

Virus

W32

Virdem

Summary

This virus was written in 1986, which makes it one of the oldest viruses in existence. It was written by R. Burger, the author of "Computer Viruses: A High-Tech Disease". It is not a threat in unmodified form, as the virus makes it quite clear that the program has been infected. Virdem overwrites the first part of the program and appends the original code to the end of the file. Two similar variants of this virus are known - one with all the text strings in German, but the other is an English language version.

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

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details


Variant:Killer

This variant is of the same length as the original, but the text messages have been changed.


Variant:Virdem 792, Virdem 824

Two shorter variants, possibly created by removing the text messages, or they might be earlier variants of the virus.