ATT&CK provides a structure for hunters to build their hypotheses and search for threats. It is one of the industry’s most comprehensive knowledge bases for adversary behavior. It provides a framework for hunting for adversary tactics and techniques across the ATT/CK matrix. Learn how to use the framework to increase the efficacy of your threat hunting program and test it against known techniques. The best practices on using the framework include developing a hypothesis and testing it on known techniques against each other to find out what threat hunters are looking for.”]
Source: https://www.healthcareinfosecurity.com/how-to-mature-your-threat-hunting-program-a-12050