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Aliases :

Bug, Bug_070, Bug70


This is a boot sector virus, which infects the DOS boot sector on hard drives (instead of the usual MBR). It stays resident in low system memory in the interrupt table. Virus contains several bugs and may often crash the machine. The virus also reinfects floppies every time they are accessed.Bug has no activation routines, it just spreads. Virus uses hex value 070A as an infection marker and as a backdoor to original INT 13h, hence the reference to 70 in some alias names for this virus.Bug has been reported to be in the wild in Norway and Finland during 1996.


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