Full Report
The open-source command-and-control (C2) framework known as AdaptixC2 is being used by a growing number of threat actors, some of whom are related to Russian ransomware gangs. AdaptixC2 is an emerging extensible post-exploitation and adversarial emulation framework designed for penetration testing. While the server component is written in Golang, the GUI Client is written in C++ QT for
Analysis Summary
# Tool/Technique: AdaptixC2
## Overview
AdaptixC2 is an emerging, open-source, extensible post-exploitation and adversarial emulation framework originally designed for penetration testing. It is being actively weaponized by a growing number of threat actors, including those associated with Russian ransomware operations like Fog and Akira. It is characterized as a modular and versatile framework capable of comprehensively controlling impacted machines.
## Technical Details
- Type: Attack Tool/Framework
- Platform: Cross-platform compatibility (Server component in Golang, GUI Client in C++ QT)
- Capabilities: Command execution, fully encrypted communications, credential management, screenshot retrieval, and remote terminal access.
- First Seen: Early iteration publicly released in August 2024 (by RalfHacker).
## MITRE ATT&CK Mapping
As an advanced post-exploitation framework, AdaptixC2 likely spans several stages, focusing heavily on Command and Control and Execution.
- **TA0011 - Command and Control**
- T1071 - Application Layer Protocol
- T1090 - Proxy
- **TA0002 - Execution**
- T1059 - Command and Scripting Interpreter (Leveraged via PowerShell scripts mentioned in its usage)
*(Note: Specific technique IDs are inferred based on framework capabilities, as the article does not provide explicit mapping data.)*
## Functionality
### Core Capabilities
* **Command Execution:** Ability to execute arbitrary commands on compromised systems.
* **Fully Encrypted Communications:** Utilizes encryption to secure C2 traffic.
* **Remote Terminal Access:** Provides interactive control over the compromised host.
### Advanced Features
* **Extensible Architecture:** Designed as a modular framework, allowing for expansion of capabilities.
* **Credential and Screenshot Management:** Features built-in modules for harvesting credentials and capturing screen activity.
* **Adversarial Emulation:** Intended for simulating advanced adversary behaviors.
* **Cross-Platform Support:** Achieved through mixed development (Golang server, C++ QT client).
## Indicators of Compromise
* **File Hashes:** Not provided in the context.
* **File Names:** Not provided in the context.
* **Registry Keys:** Not provided in the context.
* **Network Indicators:** Communications are fully encrypted; specific C2 indicators are not detailed, but traffic uses application layer protocols for C2.
* **Behavioral Indicators:** Use of the tool in conjunction with initial access brokers leveraging **CountLoader**. Deployment via methods such as fake help desk support scams over Microsoft Teams and execution via AI-generated **PowerShell scripts**.
## Associated Threat Actors
* Threat actors tied to the **Fog** ransomware operation.
* Threat actors tied to the **Akira** ransomware operation.
* Initial Access Brokers (IABs).
* Attributed to an individual/entity associated with the alias "RalfHacker" who developed and promoted the tool.
## Detection Methods
* **Signature-based detection:** Should focus on known file artifacts, though adaptability may complicate this.
* **Behavioral detection:** Monitoring for suspicious, encrypted outbound network traffic matching C2 patterns. Specific detection points include the execution of the framework components following initial access via CountLoader, or activity associated with the deployment methods (e.g., post-execution activity following a Teams interaction).
* **YARA rules:** Not provided in the context.
## Mitigation Strategies
* **Prevention measures:** Monitoring and restricting the execution of unsigned or unusual PowerShell scripts, especially those generated dynamically (e.g., via AI tools).
* **Hardening recommendations:** Strict network egress filtering to possibly block known (or emergent) C2 infrastructure once identified. Implement strong endpoint detection and response (EDR) capable of monitoring file execution and process injection used by post-exploitation frameworks.
## Related Tools/Techniques
* **Empire:** Mentioned by the developer as an inspiration for AdaptixC2.
* **CountLoader:** Used by threat actors associated with AdaptixC2 deployments for initial access delivery.