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Published Dec 07, 2006 | Updated Sep 15, 2017

Virus:DOS/JackTheRipper

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

Windows Defender detects and removes this threat.

This virus can stop some of your files from working correctly in operating systems earlier than, and including Windows XP.

It spreads by infecting the master boot record (MBR) on connected hard disks and floppy disks.

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Repair your Master Boot Record - run the Bootrec.exe tool

This threat makes changes to your Master Boot Record (MBR). To repair the MBR you might need to run the Bootrec.exe tool using Windows installation media.

You can read more about the Bootrec.exe tool in the Use Bootrec.exe in the Windows RE article.

Before you begin:

You will need to use Windows installation media to run the Bootrec.exe tool. If you don’t have Windows installation
media, you might have to create it.

To run the Bootrec.exe tool in Windows 8:

  1. Put your media in the or drive and restart your .Windows 8DVDUSBPC
  2. Select a language, time and currency, and keyboard or input method, and then click Next.
  3. Click Repair your computer.
  4. Click Troubleshoot, then Advanced options.
  5. Click Command Prompt and then type Bootrec /FixMBR and then press Enter.
  6. Type Exit and the press Enter.
  7. At the Choose an Option screen click Continue.
  8. Remove the Windows 8 media from your drive and restart your PC.

To run the Bootrec.exe tool in Windows 7:

  1. Put your media in the or drive and restart your .Windows 7DVDUSBPC
  2. Press any key when you are prompted.
  3. Select a language, time and currency, and keyboard or input method, and then click Next.
  4. Click Repair your computer.
  5. Select the operating system that you want to repair, and then click Next.
  6. In the SystemRecovery Options dialog box, click Command Prompt.
  7. Type Bootrec.exe / FixMBR, and then press Enter.
  8. Remove the Windows 7 media from your drive and restart your PC.
Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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