Short bio

Ransom.Ragnar is Malwarebytes' detection name for a family of ransomware also known as RAGNAR_LOCKER.


Victims will find the ransome note named RGNR_<ID>.txt where <ID> is different for every victim.

Type and source of infection

Ransom.Ragnar is ransomware. Ransomware in general makes files on the victims system unusable until the ransom is payed. Ransom.Ragnar not only encrypts a victims files, but also threatens to publish them. Ransom.Ragnar is spread in the form of a preinstalled and preconfigured Windows XP virtual machine that runs the ransomware on the victim's system.


Recovering from a ransomware attack can be a painstaking process even if the victim decides to pay it can take a considerable time to recover without adequate, recent, and organized backups, or a roll-back technology.

Not paying the Ragnar_Locker ransom can lead to exposure of exfiltrated data on the dark web.


block Ransom.Ragnar

Malwarebytes blocks Ransom.Ragnar

Home remediation

Malwarebytes can detect and remove Ransom.Ragnar without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click MBSetup.exe and follow the prompts to install the program.
  3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  4. Click on the Get started button.
  5. Click Scan to start a Threat Scan.
  6. Click Quarantine to remove the found threats.
  7. Reboot the system if prompted to complete the removal process.

Take note, however, that removing this ransomware does not decrypt your files. You can only get your files back from backups you made before the infection happened.

Business remediation

How to remove Ransom.Ragnar with the Malwarebytes Nebula console

You can use the Malwarebytes Anti-Malware Nebula console to scan endpoints.

endpoint menuNebula endpoint tasks menu

Choose the Scan + Quarantine option. Afterwards you can check the Detections page to see which threats were found. Nebula detections On the Quarantine page you can see which threats were quarantined and restore them if necessary. Nebula Quarantaine All component/technology detections are passed to the remediation engine for complete removal from infected systems. This industry leading technology uses patented techniques in identifying all cohorts or associated files for a single threat and removes them all together to prevent malware from resuscitating itself. If you are using Malwarebytes Ransomware Rollback technology, it allows you to wind back the clock to negate the impact of ransomware by leveraging just-in-time backups.


File extensions:


Ransom notes:



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