How to Use and Create Threat Intelligence in an Office 365 World - SANS CTI Summit 2019

Everyone is moving to the cloud, specifically Microsoft Cloud. Microsoft expects to have 66 percent of its Office business customers in the cloud by 2019. Doing so makes sense: it’s easier than having on-premises mail servers, it (theoretically) reduces costs, and Microsoft Office 365 has one of the best security teams in the world. However, there is a downside, which is that it’s hard to protect what you can’t see or access. As of today, it is extremely difficult (or impossible, depending on your subscription level) to apply your externally created threat intelligence into Microsoft Office 365 detections. It is even more frustrating to try and search for known indicators on a platform that is not designed to help the security community.

This talk will describe methods and release open-source code to enhance your Office 365 security by analyzing email metadata, attachments, and even full content with tools like stoQ or LaikaBOSS and by looking at how to use that information to research and create actionable threat intelligence via platforms like Splunk.

Dave Herrald (@daveherrald), Staff Security Strategist, Splunk
Ryan Kovar (@meansec), Principal Security Strategist, Splunk