From malwarebytes.org:

We are very excited to announce the release of Malwarebytes Anti-Ransomware beta!

As mentioned in the blog announcement by Marcin this beta is extremely exciting as it introduces the most innovative approach in the market today for protecting against ransomware; a completely proactive and signature-less technology that is able to detect and block even the most dangerous of ransomware variants like CryptoWall4, CryptoLocker, Tesla, and CTB-Locker.

Malwarebytes Anti-Ransomware monitors all activity in the computer and identifies actions which are typical of ransomware activity. It keeps track of all activity and, once it has enough evidence to determine a certain process or thread to be ransomware, blocks the infection and quarantines the ransomware before it has a chance to encrypt users’ files. During development Malwarebytes Anti-Ransomware has blocked every single ransomware variant we have thrown at it. We are extremely satisfied with its results and are excited to bring this technology to our user community for further testing.

As this is the very first beta we do encourage beta users to install the product in non-production environments for testing purposes.

 

Installation is very straight forward. Simply download and install from the link below. You can safely install Malwarebytes Anti-Ransomware beta alongside Malwarebytes Anti-Malware and Malwarebytes Anti-Exploit. If you encounter a problem or false positive please read this.

Download link (beta5 – build 0.9.14.361)
https://malwarebytes.box.com/s/uluqe6ms2l36bsxkudurlr7yr8lp6d8g

Please report any issues you might find in this forum. Both Nathan Scott, aka Decrypterfixer, our resident ransomware researcher and Technical Product Manager of Anti-Ransomware, and myself, will be happy to help out with any feedback.

Thanks for participating in this beta program and helping us improve this exciting technology that makes up Malwarebytes Anti-Ransomware!