Trend Micro AntiRansomware Tool was able to execute on an infected environment and kill the ransomware process.

While the file is still available for download, it seems to have disappeared from the Trend Micro website. We're assuming it was replaced with Trend Micro Ransomware File Decryptor.

For ransomware that uses a digitally signed process, Trend Micro AntiRansomware Tool will not kill the process and instead minimize it.

To use the tool effectively, boot into safe mode with networking and Run as administrator.

For Windows XP users, make sure to uncheck "Protect my computer and data from unauthorized program activity" before running the tool.

Once Trend Micro AntiRansomware Tool has been installed, restart your computer and go to the normal mode where the ransomware locks the screen.
Trigger the AntiRansomeware Tool by pressing the following keys: Left CTRL + ALT + T + I.
The screen lock should terminate, and the AntiRansomware screen should appear.
Click Scan to scan the computer for any ransomware files.
Review and select the threats that you have verified to be malicious then press Clean.
Click Reboot to restart the computer.