Short bio

Trojan.Qhost is Malwarebytes’ generic detection name for malware that modifies the Windows system’s hosts file.


Trojan.Qhost alters the hosts file as a means to redirect the user’s Internet traffic, for example to stop him from downloading security software or installing updates.


Malwarebytes protects users from Trojan.Qhost by using real-time protection.

block Trojan.Qhost

Malwarebytes blocks Trojan.Qhost

Home remediation

Malwarebytes can detect and remove Trojan.Qhost 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 startedbutton.
  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.

If you were using a custom hosts file before infection, you may have to recreate it or restore from your backup.

Business remediation

How to remove Trojan.Qhost 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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