This case study details the professional restoration of a Microsoft SQL Server 2012 database following a severe infection by the .weax ransomware. By utilizing advanced block-reconstruction techniques, the data was successfully extracted from the encrypted environment without the need for the attacker’s decryption key.

Client & Data Information

• Client Name: Confidential
• Data Type: SQL Server 2012 (.MDF / .LDF)
• Data Capacity: 5 GB
• Ransomware Extension: .weax

Incident Summary

The client’s server was targeted by the .weax ransomware variant, which systematically encrypted all stored files. The primary ERP system was rendered offline due to the corruption of the SQL 2012 database files. Initial diagnostics by our team revealed that while the file system was heavily impacted, the internal data pages of the database remained largely intact, providing a high probability for successful extraction.

Technical Analysis

Our forensic analysis of the .weax encryption pattern yielded the following insights:

• Partial Encryption: The ransomware targeted specific file headers and footers, leaving the core data blocks within the 5 GB file reachable.
• Structural Integrity: The internal schema of the SQL 2012 database remained consistent, allowing for a structured rebuild.
• Extraction Feasibility: By bypassing the OS-level encryption layer, we identified that the Excellent SQL Database Recovery Tool could reconstruct the corrupted blocks effectively.

Recovery Solution

The recovery strategy focused on data extraction and reconstruction. Rather than attempting a high-risk decryption of the entire operating system, our engineers targeted the encrypted blocks within the database files. By rebuilding these segments, we successfully extracted the raw data and moved it into a healthy database container.

Recovery Process

• Infection Assessment: Deep scan of the 5 GB database file to map the extent of .weax encryption damage.
• Encrypted Block Reconstruction: Using proprietary tools to rebuild the corrupted database pages and restore file pointers.
• Schema & Data Extraction: Extracting all relational tables, indexes, and stored procedures from the .weax-encrypted file.
• Database Validation: Mounting the recovered data into a fresh SQL 2012 environment to ensure zero data loss.
• ERP Compatibility Check: Final testing to ensure the database can be utilized immediately by the client’s ERP software.

Recovery Results

• Recovery Integrity: 100%
• Recovered Files: SQL Server 2012 Database Files
• System Status: Fully functional; database integrated back into the ERP environment.
• Total Recovery Time: 2 Hours

Expert Reminder from Shenzhen Excellent Data Recovery Center: Regular backups are your first line of defense. In the event of a .weax attack, contact professionals immediately. We provide a 100% recovery guarantee for specific database failures, regardless of the database size.