BSidesSF

Analyzing traffic patterns for trends can be a rich source of information for investigating potential malicious domains. This talk will be an examination of spikes in DNS queries and how they can be used to find potentially new threats. Malicious domains that appear as spiked domains usually belong to Domain Generation Algorithm (DGA) or exploit kit families. However, not all domains that spike are necessarily malicious. One challenge is sifting through the large data set and extracting the potentially harmful spikes. To accomplish this goal we rely on unsupervised learning methods such as clustering to help us explore and eventually classify the data.