Bye is a typical boot sector virus which infects the boot sectors of diskettes and the main boot records of hard disks. The virus is capable of infecting all common diskette types (360, 720, 1200 and 1440 kilobytes). Bye was discovered in Italy, at the end of September 1994.

The virus infects the hard disk when the computer is booted from an infected diskette. Once the hard disk is infected and the virus has loaded itself into memory, it shall infect all non-write protected diskettes used in the computer.

The virus contains the following encrypted text: "Bye by C&CL".

Bye uses stealth virus techniques, so its code cannot be seen on the hard disk's MBR while it is resident in memory.

The virus stores the original main boot record on the last sector of the hard disk's active partition. On diskettes, the virus stores the boot sector on the diskette's last sector.

The virus changes only 40 bytes in the boot sector - the rest of the viruse's code is stored elsewhere. Bye does this to avoid being detected by heuristic scanners.

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.

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