Java has a new RAT titled STRRAT that is now shipping with the .crimson ransomware module. Typical infection begins with a spam email containing a malicious attachment with a .JAR extension. This JAR file drops a .VBS file which executes a script via PowerShell. This script drops a second .VBS file. This file downloads the Java Runtime Environment allowing the payload ntfsmgr.jar to download and install a hidden RDPWrap. Finally, there is a download of lib.zip containing jar dependencies. With a variety of commands at its disposal, this RAT is robust and persistent. Features contained in the RAT include rebooting the machine, downloading and executing files, enabling cmd.exe, keylogging, and a rudimentary ransomware module. This module appends .crimson to encrypted files. This RAT is limited in that it only works with Windows machines, needs a pre-installed JRE (presently), and Outlook blocks the attachment.