Short bio

Trojan.DNSChanger.ACMB2 is Malwarebytes’ generic detection name for changes made by a type of Trojan on users’ DNS settings on affected Windows systems.

Type and source of the infection

The changes made by the DNS-changing malware can be found in the registry values called NameServer under the keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID of the interface}




Malwarebytes protects users from Trojan.DNSChanger.ACMB2 by using real-time protection to block the Trojans that make these changes.

block Trojan.DNSChanger

Malwarebytes blocks Trojan.DNSChanger

Home remediation

Malwarebytes can detect and remove Trojan.DNSChanger.ACMB2 without further user interaction. The removal also takes care of some required actions to undo other changes:

  • Reset the DNS settings to something safe
  • Clear the browser cache
  • Remove the jobs (Scheduled Tasks) that were responsible for the change (if still present)


  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 Trojan.DNSChanger.ACMB2 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.

Nebula detections

On the Quarantine page you can see which threats were quarantined and restore them if necessary.

Nebula Quarantaine


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