Be extremely cautious. A Google search for "Malwarebytes Anti-malware Portable" will return hundreds of results, many of which are fake, bundled with adware, or outright viruses. Cybercriminals love packaging malware into "portable antivirus" tools.
For situations where you need a portable solution, Malwarebytes offers two key utilities that do not require a traditional installation: Malwarebytes Anti-malware Portable
Malwarebytes Anti-Malware Portable: Ultimate Guide to Emergency Scans Be extremely cautious
Download legitimate portable scanners, such as the Malwarebytes Support Tool, alongside secondary on-demand scanners like Windows Malicious Software Removal Tool (MSRT) or specialized rootkit removers. For situations where you need a portable solution,
The utility will automatically attempt to disable active malware, download the latest definitions, and install Malwarebytes.
While there is no single, official "portable" version of the standard Malwarebytes Anti-Malware application, Malwarebytes provides specialized tools designed for "on-the-go" use without a full installation. These are ideal for technicians or users fixing infected machines from a USB drive.
How does it stack up against the competition?