Crazyboot

Classification

Category:

Malware

Type:

Virus

Platform:

-

Aliases:

Crazyboot

Summary

Crazyboot is a typical boot sector virus which corrupts diskettes due to bugs in the code.

It is only able to infect a hard disk when you try to boot the machine from an infected diskette. At this time Crazyboot infects the Master Boot Record, and after that it will go resident to high DOS memory during every boot-up from the hard disk.

Once Crazyboot gets resident to memory, it will infect practicly all non-writeprotected diskettes used in the machine. It is also a stealth virus - if you try to examine an infected boot record, it will show you the original clean one instead.

Every now and then it will display the following text:

Don't PLAY with the PC !
Otherwise you will get in 'DEEP,DEEP' trouble !...
Crazy Boot Ver. 1.0

Removal

Automatic action

Crazyboot does not keep the partition info in it's correct place in the MBR of the hard drive. Due this, do not try to disinfect this virus with the FDISK /MBR command. F-Secure anti-virus products disinfect this virus from F-PROT version 2.22 upwards.

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.

For more Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

N/A