PUP.Optional.Crossrider

Short bio

PUP.Optional.Crossrider is Malwarebytes’ detection name for a potentially unwanted program (PUP), specifically a type of adware.

Type and source of infection

Crossrider offers a highly configurable method for its clients to monetize their software. The common method to infect end-users is software bundlers. The installers usually resort to browser hijacking. Targeted browsers are Internet Explorer, Firefox, Chrome, and sometimes Opera. Crossrider not only targets Windows machines but Macs as well.

PUP.Optional.Crossrider installs are typically triggered by bundlers that offer software you might be interested in and combine them with adware or other monetizing methods.

Protection

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

Malwarebytes blocks PUP.Optional.Crossrider

Remediation

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

Please download Malwarebytes to your desktop.
Double-click MBSetup.exe and follow the prompts to install the program.
When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
Click on the Get started button.
Click Scan to start a Threat Scan.
Click Quarantine to remove the found threats.
Reboot the system if prompted to complete the removal process.

For some browser hijackers, it may be beneficial to read our guide to restore your browser.

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.

Open Malwarebytes for Windows.
Click the Detection History
Click the Allow List
To add an item to the Allow List, click Add.
Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
Repeat this for any secondary files or folder(s) that belong to the software.

If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.