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Short bio

OSX.MacStealer is Malwarebytes’ detection name for an information stealer that targets systems running macOS.

Type and source of infection

OSX.MacStealer tries to steal credentials from the affected systems that are stored in the iCloud KeyChain, web browsers, cryptocurrency wallets, and other potentially sensitive files.

The victims is tricked into executing an unsigned DMG file. At that point it displays a bogus password prompt in an attempt to steal their real password.


Malwarebytes for Mac detects and removes OSX.MacStealer


Malwarebytes for Mac will detect and remove the components of this malware.

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”.