Additional Resources:

Recorded Webcast: How to Stay Ahead of Today's Ransomware Realities
https://www.splunk.com/en_us/form/how-to-stay-ahead-of-todays-ransomware-realities.html 

Enterprise Security Wannacry Dashboard on Splunk Oxygen 
https://demo-es.splunkoxygen.com/en-US/app/SplunkEnterpriseSecuritySuite/wannacry 

Adding Up The Total Costs of Ransomware
https://www.darkreading.com/operations/adding-up-the-total-costs-of-ransomware/a/d-id/1324378?

"WannaCry" ransomware attack losses could reach $4 billion
https://www.cbsnews.com/news/wannacry-ransomware-attacks-wannacry-virus-losses/ 

Malwarebytes State of Malware Report
https://www.malwarebytes.com/pdf/white-papers/stateofmalware.pdf

Splunk Security Essentials for Ransomware
https://splunkbase.splunk.com/app/3593/

Splunk Security Specialists