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2019-03-04
[Anonymous].  2018.  A Systems Approach to Indicators of Compromise Utilizing Graph Theory. 2018 IEEE International Symposium on Technologies for Homeland Security (HST). :1–6.
It is common to record indicators of compromise (IoC) in order to describe a particular breach and to attempt to attribute a breach to a specific threat actor. However, many network security breaches actually involve multiple diverse modalities using a variety of attack vectors. Measuring and recording IoC's in isolation does not provide an accurate view of the actual incident, and thus does not facilitate attribution. A system's approach that describes the entire intrusion as an IoC would be more effective. Graph theory has been utilized to model complex systems of varying types and this provides a mathematical tool for modeling systems indicators of compromise. This current paper describes the applications of graph theory to creating systems-based indicators of compromise. A complete methodology is presented for developing systems IoC's that fully describe a complex network intrusion.