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Short bio

Trojan.SmokeLoader is Malwarebytes’ detection name for a large family of backdoor Trojans used to drop many types of other malware.


Trojan.SmokeLoader gains persistence by using a multitude of methods:

  • scheduled tasks
  • registry entries
  • the startup folder
  • replacing legitimate files

Type and source of infection

Trojan.SmokeLoader is a Trojan that can be used to drop other malware on an infected systems, but operators can choose additional modules that allow for information stealing capapbilities. Trojan.SmokeLoader can be distributed by exploit kits, in email campaigns, and by being offered as legiitmate applications.


Trojan.SmokeLoader has been seen to drop other backdoors, ransomware, cryptominers, password stealers, Point-of-Sale (PoS) malware, and banking Trojans.


block Trojan.SmokeLoader

Malwarebytes blocks Trojan.SmokeLoader

Home remediation

Malwarebytes can detect and remove many Trojan.SmokeLoader infections 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.

Business remediation

How to remove Trojan.SmokeLoader 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