Cornerstone: Red Team

Over the past few years, there has been a massive proliferation of YARA signatures for Beacon. We know from conversations with our customers that this has become problematic when using Cobalt Strike for red team engagements and that there has been some confusion over how Cobalt Strike’s malleable C2 options can help.   Therefore, this blog […]

Read More… from Cobalt Strike and YARA: Can I Have Your Signature?

Our colleagues over at Core Security have been doing great things with Cobalt Strike, making use of it in their own engagements. They wrote up this post on creating Cobalt Strike Beacon Object Files using the MinGW compiler on Linux. It covers several ideas and best practices that will increase the quality of your BOFs. […]

Read More… from Writing Beacon Object Files: Flexible, Stealthy, and Compatible

Process injection is a core component to Cobalt Strike post exploitation. Until now, the option was to use a built-in injection technique using fork&run. This has been great for stability, but does come at the cost of OPSEC. Cobalt Strike 4.5 now supports two new Aggressor Script hooks: PROCESS_INJECT_SPAWN and PROCESS_INJECT_EXPLICIT.  These hooks allow a user to define how the fork&run and explicit injection techniques are implemented when executing post-exploitation […]

Read More… from Process Injection Update in Cobalt Strike 4.5

Motivation It is known that dumping Windows credentials is a technique often utilized for everyday attacks by adversaries and, consequently, Red Teamers. This process has been out there for several years and is well documented by MITRE under the T1003.001 technique. Sometimes, when conducting a Red Team engagement, there may be some limitations when trying […]

Read More… from Nanodump: A Red Team Approach to Minidumps

DLL attacks (hijacking, proxying, etc) are a challenge defenders must face. They can be leveraged in a Red Team engagement to help measure these defenses. Have you used this technique? In this post, I’ll walk through an example of adding a DLL proxy to beacon.dll for use in a DLL Proxy attack. What is a […]

Read More… from Create a proxy DLL with artifact kit

We’re often asked, “what does Cobalt Strike do?” In simple terms, Cobalt Strike is a post-exploitation framework for adversary simulations and Red Teaming to help measure your security operations program and incident response capabilities. Cobalt Strike provides a post-exploitation agent, Beacon, and covert channels to emulate a quiet long-term embedded actor in a network.   If […]

Read More… from How to Extend Your Reach with Cobalt Strike