This case study documents the successful recovery of a Microsoft SQL Server 2008 database after a disruptive attack by the .wxx ransomware. By focusing on block-level reconstruction, our team was able to restore the client’s critical business data and resume ERP operations in record time.

Client & Data Information

• Client Name: Confidential
• Data Type: SQL Server 2008 (.MDF / .LDF)
• Data Capacity: 25 GB
• Ransomware Extension: .wxx

Incident Summary

The client’s server was compromised by the .wxx ransomware, which systematically encrypted all files and appended the .wxx extension. This caused an immediate shutdown of the company’s ERP system. Upon technical analysis, our team found that despite the encryption, the internal structures of the 25 GB database files remained largely intact, allowing for a specialized recovery approach.

Technical Analysis

Our forensic evaluation of the .wxx infection provided the following insights:

• Page-Level Integrity: The .wxx virus primarily corrupted file headers, while the majority of the internal database pages were not fully overwritten.
• Structure Preservation: The relational schema within the SQL 2008 database showed high integrity under deep-sector scanning.
• Direct Extraction: Analysis confirmed that the Excellent SQL Database Recovery Tool could bypass the encrypted file layer to reconstruct the raw data blocks.

Recovery Solution

The recovery strategy utilized encrypted block reconstruction. Instead of a general decryption attempt—which can often lead to further data corruption—our engineers targeted the specific data pages within the 25 GB database file. We rebuilt the corrupted sectors and extracted the tables directly, ensuring the final result was a clean, healthy database.

Recovery Process

• Forensic Diagnostics: In-depth analysis of the .wxx encryption footprint on the SQL 2008 files.
• Encrypted Block Rebuilding: Repairing and reconstructing the damaged blocks within the .MDF file structure.
• Advanced Data Extraction: Utilizing specialized recovery tools to pull data from the corrupted container into a clean environment.
• Integrity & Schema Validation: Verifying that all tables, records, and relationships are consistent and error-free.
• ERP Integration Test: Final confirmation that the database is ready for immediate deployment into the client’s ERP software.

Recovery Results

• Recovery Integrity: 100%
• Recovered Files: SQL Server 2008 Database Files
• System Status: Successfully restored; the ERP system is fully operational.
• Total Recovery Time: 2 Hours

Expert Reminder from Shenzhen Excellent Data Recovery Center: Important data must be backed up frequently. In case of a .wxx attack, contact professionals immediately. We provide a 100% original database recovery guarantee for specific failures, and databases of any size can be recovered immediately.