Blacksuit Ransomware Analysis & IOC Database
Perfil del Actor
According to Trend Micro, this ransomware has significant code overlap with Royal Ransomware. It targets critical infrastructure and healthcare systems.
Known victims: 184
Origen y Motivacion
Attackers use the Blacksuit malware to encrypt victim files, demand ransoms in cryptocurrency (often USDT), and release backdoors for further extortion. The group operates with a strict hierarchy, often operating out of Russia or other sanctioned regions.
Tactic 1: Ransomware Delivery
The primary delivery method is email phishing targeting CISOs, IT directors, and healthcare executives. Attachments are typically hidden in PDF documents that appear to be internal reports or presentations.
Tactic 2: Backdoor Installation
Once compromised, attackers install backdoors such as the "Sleeper" tool. This enables remote control of encrypted files via a web interface and provides access to backup systems for data exfiltration.
Tecnicas y Tacticas (TTPs)
- TTP 1: Phishing Campaign
- Attacks exploit corporate email infrastructure. Common vectors include:
- Email attachments with malicious PDFs or executable files.
- Suspicious links in internal documentation (e.g., "internal-only" documents).
- Phishing emails from IT support requesting privileged access.
- TTP 2: File Encryption
- Compromised files are encrypted using custom algorithms. Attackers often encrypt critical data including:
- HIPPA-sensitive patient records.
- Financial statements and balance sheets.
- Project specifications and architectural diagrams.
- TTP 3: Backdoor Deployment
- Sleepers tool provides remote access to encrypted files via web interface, allowing attackers to steal sensitive data during encryption or exfiltrate backups afterward.
Campanas Conocidas
The Blacksuit malware is frequently associated with the Royal Ransomware family. Both share similar encryption algorithms and backdoor mechanisms (Sleeper tool).
| Tipo | Valor/Contexto |
|---|---|
| Malware Family | Blacksuit / Royal Ransomware (Code Overlap) |
| Delivery Vector | Phishing Email with PDF Attachment |
| Encryption Method | Custom Custom Ransomware Algorithm (Not open-source) |
Objetivos y Victimas
The Blacksuit ransomware specifically targets:
- Healthcare Organizations: Hospitals, clinics, and diagnostic centers.
- Critical Infrastructure: Power grids and telecommunications networks.
- Financial Institutions: Banks and investment firms with extensive documentation.
Indicadores de Compromiso (IOCs)
No hay indicadores públicos de compromiso disponibles para Blacksuit en la base de datos actualizada de Threat Intelligence.
| Tipo | Valor/Contexto |
|---|---|
| Potential IOC (No Public) | Blacksuit malware signature, Backdoor code, Crypto currency address patterns |
Deteccion y Defensa
Defenderes deben implementar las siguientes medidas de defensa:
- Evaluación del Documento: Verificar el origen del PDF antes de abrir. Documentos con firmas no autorizadas o que se crean en tiempo real son altamente sospechosos.
- Filtro Antivirus: Instalar software de análisis de archivos que detecte la firma específica de Blacksuit (aunque sea en código binario).
- Policía de Seguridad: Alertar a la seguridad cuando se acceda a documentos sin validación de identidad o que se creen automáticamente.
Fuentes Adicionales
Para obtener información más detallada sobre este grupo de amenazas, consultar los informes de Trend Micro y las bases de datos de malware en OpenCTI (si está disponible).