Full Report
Researchers have uncovered new and evolving versions of the Albabat ransomware, which now target Windows, Linux, and macOS systems. These updated variants (v2.0.0 and v2.5) show a notable expansion from the ransomware’s initial Windows-only focus and use GitHub for storing and...
Analysis Summary
# Tool/Technique: Albabat Ransomware (v2.0.0 and v2.5)
## Overview
Albabat is an evolving ransomware family that has expanded its initial Windows focus to actively target Windows, Linux, and macOS systems. The updated variants utilize GitHub infrastructure to dynamically fetch configuration and operational settings, allowing for adaptable attack behavior.
## Technical Details
- Type: Malware family (Ransomware)
- Platform: Windows, Linux, macOS
- Capabilities: Cross-platform file encryption, process termination, system data exfiltration to a PostgreSQL database hosted externally.
- First Seen: Initial versions existed prior to the context date; v2.0.0 and v2.5 are the currently observed evolving variants.
## MITRE ATT&CK Mapping
*Note: Specific T-IDs are inferred based on descriptive capabilities.*
- [TA0011 - Command and Control]
- [T1105 - Ingress Tool Transfer] (Downloading/fetching configurations via GitHub REST API)
- [TA0012 - Credential Access] / [TA0005 - Defense Evasion]
- [T1059 - Command and Scripting Interpreter] (Implied execution across platforms)
- [TA0040 - Impact]
- [T1486 - Data Encrypted for Impact]
## Functionality
### Core Capabilities
- **Cross-Platform Encryption:** Encrypts a wide range of file extensions across Windows, Linux, and macOS.
- **Targeted Exclusion:** Excludes specific directories and system-critical files from the encryption process.
- **Process Termination:** Deactivates various running processes, likely to disrupt security controls or ensure file accessibility for encryption.
- **Configuration Management:** Dynamically retrieves configuration data (settings) by querying GitHub's REST API.
### Advanced Features
- **GitHub Integration:** Stores and delivers configuration data using a private GitHub repository managed under the alias "Bill Borguiann."
- **Custom User-Agent:** Uses the unique "User-Agent" string "Awesome App" when communicating with GitHub API to retrieve settings.
- **Infection Tracking/Exfiltration:** Collects system and user information and uploads it to an external PostgreSQL database hosted on Supabase for tracking infections and ransom payments.
- **Multi-Cryptocurrency Support (v2.5):** Inclusion of cryptocurrency wallet addresses for Bitcoin, Ethereum, Solana, and BNB in the ransom demand.
## Indicators of Compromise
- File Hashes: [Not provided in context]
- File Names: [Not provided in context]
- Registry Keys: [Not provided in context]
- Network Indicators:
- GitHub REST API endpoint access (User-Agent: "Awesome App")
- Supabase hosted PostgreSQL database (for data exfiltration)
- Behavioral Indicators:
- Network connections utilizing the User-Agent string "Awesome App."
- Attempts to access/read configuration files from a dedicated GitHub repository.
- Spawning processes designed to terminate other running applications.
## Associated Threat Actors
- Albabat operator (Specific group name not fully detailed, but referred to as the "Albabat operator")
## Detection Methods
- Signature-based detection: [Requires specific file hashes or static signatures for v2.0.0/v2.5]
- Behavioral detection: Monitoring for processes making network requests using the anomalous User-Agent "Awesome App." Detecting mass file modification/encryption activities across diverse platforms (Windows, Linux, macOS). Monitoring outbound connections to Supabase/PostgreSQL endpoints associated with data exfiltration.
- YARA rules: [Not provided in context]
## Mitigation Strategies
- **Network Filtering:** Implement egress filtering rules to inspect or block User-Agent strings that deviate from expected application behavior, specifically looking for "Awesome App" querying GitHub APIs outside of standard developer tooling.
- **Endpoint Hardening:** Ensure robust Endpoint Detection and Response (EDR) solutions are deployed across all operating systems (Windows, Linux, macOS) capable of detecting process termination sequences indicative of ransomware activity.
- **Configuration Control:** Restrict the ability of unauthorized processes to read configuration files from external, public, or private code repositories like GitHub.
- **Backup Strategy:** Maintain frequent, immutable, and isolated backups to prevent the impact of encryption.
## Related Tools/Techniques
- Other cross-platform ransomware strains utilizing unusual C2 or configuration delivery methods (e.g., reliance on legitimate public services).