Threat Descriptons



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Aliases :

AntiCAD, Plastique, Invader, HM2


This group of viruses is derived from the Jerusalem virus, but they have been significantly modified. They are longer, 2576, 2900, 3004, 3012 and four 4096 byte variants. Two of the 4096 byte variants are also known as "Invader". The 4096-byte variants also contain code for infecting the boot sector. The reason the viruses are also known as AntiCAD is thet they are targeted against the AutoCAD program. When a program named ACAD.EXE is run or sometimes when Ctrl-Alt-Del is pressed, the virus will activate, overwriting data on floppy disks and hard disks, as well as garbling the contents of the CMOS.

See also Jerusalem.


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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