Cobalt Strike 2.0 introduced Malleable C2, a technology to redefine network indicators in the Beacon payload. What does this mean for you? It means you can closely emulate an actor and test intrusion response during a penetration test.
In this blog post, I’ll take you through three threat replication case studies with Cobalt Strike. In each case study, we will emulate the attacker’s method to get in, we will use a C2 profile that matches their malware, and we will analyze what this activity looks like in Snort and Wireshark.
String of Paerls
String of Paerls is an intrusion set described by
Sourcefire’s Cisco’s VRT. In this video, we replicate the actor’s C2 with Beacon and use a macro embedded in a Word document to attack a target. We also reproduce the attacker’s phish as well.
Energetic Bear / Crouching Yeti / Dragonfly
This actor, known by many names, allegedly targets the energy sector. The best information on this actor came from pastebin.com without a slick PDF or PR team to back it up. In this video, we replicate this actor’s havex trojan with Beacon and use a Java drive-by exploit to attack a target.
With the right technologies, threat replication isn’t hard. Read about and understand the actor’s tradecraft. Craft a profile that uses the actor’s indicators. Launch an attack and carry out your assessment. Threat Replication is a way to exercise intrusion response and see how well a security program stands up to these actors.