With each query, an additional statement that selects only one unique attack path is also included, which basically just appends “LIMIT 1” to the end of the query for easy export into JSON, which we can then be ingested with ANGRYPUPPY.
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This had to be enforced as BloodHound has no knowledge of current context and would often assume full machine compromise when only a low privileged beacon was present.Ī number of basic queries were developed with assistance from Andy Robbins. A computer is only used as a valid item for a BloodHound query if there is an administrator-level beacon on the device. Using this information we can obtain a list of all current user sessions, along with machines. Cypher LogicĬobalt Strike’s Aggressor Script has the “binfo” function to obtain information on a specific beacon. Output from the “cypher” command, showing Cypher queries generated from current beacons. We do not recommend performing other lateral movement activity while ANGRYPUPPY is running. This action is recorded in the Cobalt Strike event log, along with the operator name and the ANGRYPUPPY identifier. The operator simply types “angrypuppy” into any Cobalt Strike beacon console and is then able to import the attack path, select a lateral movement technique and execute the attack. How does ANGRYPUPPY work?ĪNGRYPUPPY ingests a BloodHound attack path in JSON format and is then able to determine the actions necessary to execute the attack path, stealing credentials or moving laterally as necessary.
Alternatively, in a mature environment this may be used as a means to simulate an actor with a financial gain agenda and more likely to follow a “smash and grab” approach. As ANGRYPUPPY automates the attack, this leaves more time for project management, tactical planning and focus on achieving objectives with less time worrying about execution. Therefore such techniques would most likely be only viable against less mature organisations where the defense capability is lacking or an educated SOC is not present. Traditional lateral movement techniques are also widely detected and analysed. In our test trials it was possible to execute a 5 hop attack within 3 minutes – one which may take an operator slightly longer to do manually, and reducing the possibility of operator error (which could alert defenders).Īs mentioned, AD data collection is moving into the spotlight of the defender space. Therefore, when using BloodHound in offensive operations it is vital to execute an attack as swiftly and as accurately as possible.ĪNGRYPUPPY increases the speed and accuracy of executing the attack paths generated by BloodHound. Primarily as a result of BloodHound, AD data collection is now coming into the spotlight of defenders, and a large amount of AD traffic can be a detection criteria for defenders. However, with recent upgrades, BloodHound can now finish collection in a fraction of the time.
Upon its initial release, BloodHound could take a long time to collect its data in large environments well over 24 hours in certain cases.
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BloodHound ultimately analyzes trust relationships in a Windows Active Directory Domain with the goal to support operators and provide the ability to analyze the most efficient ways to target specific systems/users/groups.īloodHound has some shortcomings whereby a full view of the environment is required and therefore a large amount of AD data collection is necessary for it to operate.īloodHound and all of its information can be found at Why build ANGRYPUPPY/How does it help red teams? The following displays a video of the tool in action within the RASTALABS environment, created by rasta_mouseīloodHound is an AD relationship mapping and visualisation tool developed by Andy Robbins, Rohan Vazarkar, and Will Schroeder. Currently, an operator can choose psexec_psh, WMI, WinRM, or psexec techniques. Additionally, ANGRYPUPPY allows the operator to choose the technique they wish to use to perform lateral movement actions.
This allows for automated retrieval of sessions for management within Cobalt Strike and allows for the use of its SMB C2 communications channel for internal pivoting. ANGRYPUPPY uses Cobalt Strike’s built-in lateral movement and credential-stealing capabilities of its agent, Beacon. ANGRYPUPPY was partly inspired by the GoFetch and DeathStar projects, which also automate BloodHound attack path execution. ANGRYPUPPY is a tool for the Cobalt Strike framework, designed to automatically parse and execute BloodHound attack paths.
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