Short bio

PUP.Optional.Sanbreel is Malwarebytes’ detection name for a large family of adware targeting Windows systems.

PUP.Optional.Sanbreel variant

Appstein, a PUP.Optional.Sanbreel variant

Type and source of infection

PUP.Optional.Sanbreel uses different methods of browser hijacking and monetizing to get their advertisements across.
Sanbreel adware is usually installed by a bundler, but they do create sites and offer them as separate downloads.
The bundled installer is usually different from the official one. The bundled installers require arguments for a full installation and are sometimes even aware of running on a virtual machine, both to hinder researchers.


Malwarebytes protects users from PUP.Optional.Sanbreel by using real-time protection.

block PUP.Optional.Sanbreel

Malwearebytes blocks PUP.Optional.Sanbreel


Malwarebytes can detect and remove PUP.Optional.Sanbreel without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  3. Then click Finish.
  4. Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  5. If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  6. When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  7. Restart your computer when prompted to do so.

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

The Exclusions tab includes a list of items to be excluded from scans. The items may include files, folders, websites, or applications that connect to the Internet, as well as previously detected exploits.

To access the exclusions in Malwarebytes:

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