Looking for a source with procedures (TTPs) for further assessment

Hi folks!

Happy New Year to you all!

I am wondering if you know any sources providing some good threat intelligence in the form of procedures used in cyber attacks. I am trying to create an assessment process where procedures would be checked from different perspectives (prevention - security controls, detection - SIEM use cases, response - incident response and threat emulation to improve these.


I am aware of below sources like:

* MITRE ATT&CK frameworks with its metadata and …

assessment attacks aware blueteamsec cases controls cyber cyber attacks detection emulation happy new year incident incident response intelligence new year perspectives prevention procedures process response security security controls siem threat threat intelligence ttps use cases