detection icon

Short bio

Backdoor.Rustock is Malwarebytes detection name for a backdoor Trojan that was used to install the Rustock botnet client on affected systems.

Type and source of infection

Rustock was a very sophisticated botnet that specialized in spam. Rustock gained persistence by installing itself in the form of a rootkit, a category of malware that provides threat actors the means to remotely access to and gain full control of affected systems without users knowing. Backdoor.Rustock was often distributed via malicious attachments in phishing emails and even after a decade of inactivity we still find samples of the Backdoor now and then.


Malwarebytes blocks Backdoor.Rustock by using real-time protection.

Malwarebytes block Backdoor.Rustock
Malwarebytes block Backdoor.Rustock

Home remediation

Malwarebytes can remove Backdoor.Rustock for you if you decide that you want to get rid of it.

  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.

Business remediation

How to remove Backdoor.Rustock with the Malwarebytes Nebula console

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

endpoint menu

Nebula endpoint tasks menu

Choose the Scan + Quarantine option. Afterwards you can check the Detections page to see which threats were found.On the Quarantine page you can see which threats were quarantined and restore them if necessary.