https://www.dropbox.com/home?preview=B17089_Threat+Hunting+with+Elastic+Stack_eBook.pdf

https://github.com/PacktPublishing/Threat-Hunting-with-Elastic-Stack

https://www.dropbox.com/s/05d2orn055pduql/B17089_Threat Hunting with Elastic Stack_eBook.pdf?dl=0

https://www.elastic.co/guide/en/security/8.3/prebuilt-rules.html

Example