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Short bio

PUP.MacBooster is Malwarebytes detection name for a potentially unwanted program (PUP) that targets systems running MacOS.


MacBooster GUI

MacBooster GUI

Type and source of infection

PUP.MacBooster is a so-called system optimizer.  These so-called “system optimizers” have been known to use intentional false positives to convince users that their systems have problems. Then they try to sell you their software, claiming it will remove these problems. Others will turn out to be Tech Support Scammers when you call them. PUP.MacBooster is often installed by bundlers.


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


Malwarebytes for Mac can detect and remove PUP.MacBooster.

Download and install the latest version of Malwarebytes for Mac.

Click the “Scan Now” button to perform a system scan.

If threats are detected during the scan, a count of detected threats is displayed. More detailed threat information is displayed after the scan completes.

Click “Confirm” to move the detected threats to Quarantaine.

If a restart is required to complete remediation of threats detected during a scan, you will be notified. When a restart is required, please remember to save all work before clicking “Restart”.