Collaborate Disseminate
A good operator knows their tools and has an idea of how the tool is accomplishing its objectives on their behalf. This blog post surveys Beacons commands and provides background on which commands inject into remote processes, which commands spawn jobs, and which commands rely on cmd.exe or powershell.exe. API-only These commands are built-into Beacon […]
Continue reading OPSEC Considerations for Beacon Commands
Cobalt Strike 3.8 is now available. This release adds features to spawn processes with an alternate parent process. This release also gives the operator control over the script templates Cobalt Strike uses in its attacks and workflows. Processes with Alternate Parents A favorite hunt technique is to instrument a host to report all new processes, […]
Continue reading Cobalt Strike 3.8 – Who’s Your Daddy?
If you recently updated your penetration testing environment, it’s possible you were greeted with a special surprise. Cobalt Strike and its team server will no longer start. Instead of Cobalt Strike, you’re now greeted with this very intuitive and helpful error: The Parallel GC can not be combined with -XX:ParallelGCThreads=0. I’ve had a few emails […]
Continue reading Java Startup Bug in Java 1.8u131
The 8th release of the Cobalt Strike 3.0 series is now available. The release extends Malleable C2 to influence how Beacon lives in memory, adds code-signing for executables, and gives operators control over which proxy server Beacon uses. There’s a lot of good stuff here. Let’s dig into it. Malleable PE A key goal of Cobalt […]
Continue reading Cobalt Strike 3.7 – Cat, Meet Mouse
Working on Cobalt Strike, I get some insight into what folks are trying to do with it. Recently, the use of domain fronting for redirectors has come on my radar. A redirector is a server that sits between your malware controller and the target network. Domain fronting is a collection of techniques to make use […]
Continue reading High-reputation Redirectors and Domain Fronting
This is a short blog post with a long title. A few weeks ago, Matt Nelson published Lateral Movement Using the MMC20.APPLICATION COM Object (there’s a Part 2 as well!). The post documents an option, beyond the usual suspects (e.g., services, scheduled tasks, wmi, etc.), to ask a remote system to run a process for […]
Continue reading Scripting Matt Nelson’s MMC20.Application Lateral Movement Technique
I finally had a chance to sit down and play with BloodHound. This was an item on my hacker todo list for awhile now. In this blog post, I’ll take you through my initial steps setting up and using this tool. It’s my hope that this information will help you get started with BloodHound too. […]
Continue reading My First Go with BloodHound
Cobalt Strike 3.6 is now available. This release adds an API to use third-party privilege escalation exploits with Beacon and extends Malleable C2 to allow HTTP C&C without HTTP POST. This release also includes fixes and improvements for existing features. Privilege Escalation API This release adds an API to integrate privilege escalation exploits into Beacon’s […]
Continue reading Cobalt Strike 3.6 – A Path for Privilege Escalation
Agentless Post Exploitation is using system administration capabilities to meet post-exploitation objectives, without an agent on the target. It’s just evil system administration. This talk is a survey of agentless post-exploitation techniques. It covers how to execute commands, upload/download files, harvest credential material, user exploitation, and pivoting. Enjoy! Filed under: Red Team
Continue reading Agentless Post Exploitation
This blog post is a collection of articles and links Cobalt Strike users may find interesting. Let’s jump into it: 1. Redirecting Cobalt Strike DNS Beacons Redirectors are a popular offensive technique to obscure a C2 server’s actual source. They’re also nice because you can create and remove redirectors much easier than tearing down and […]
Continue reading Cobalt Strike Tapas II