This case study details the rapid restoration of a Microsoft SQL Server 2005 database following a destructive infection by the .jzrxWYIHi ransomware. By combining manual block reconstruction with advanced extraction tools, our team returned the client to full operation in just one hour.

Client & Data Information

• Client Name: Confidential
• Data Type: SQL Server 2005 (.MDF / .LDF)
• Data Capacity: 6 GB
• Ransomware Extension: .jzrxWYIHi

Incident Summary

The client’s server was targeted by the .jzrxWYIHi ransomware, a variant that encrypts and renames all critical system files, effectively locking the company’s ERP system. Upon arrival, our engineers performed a deep-sector analysis of the 6 GB database. Despite the encryption, the diagnostic tests revealed that the internal data pages remained highly intact, presenting a clear path for professional recovery.

Technical Analysis

Forensic evaluation of the .jzrxWYIHi encryption footprint provided the following technical insights:

• High Core Integrity: While the file was corrupted at the OS level, the underlying SQL data structures were not overwritten.
• Predictable Encryption Patterns: The ransomware targeted specific blocks, which allowed our team to isolate the damaged segments.
• Reconstruction Feasibility: Using the Excellent SQL Database Recovery Tool, it was determined that a full database rebuild could be achieved by correcting the corrupted blocks manually.

Recovery Solution

The recovery strategy focused on manual block reconstruction and data extraction. Our experts manually repaired the encrypted blocks within the database file to restore consistency. Once the structure was stabilized, we extracted the raw data and rebuilt the database into a clean SQL 2005 environment, ensuring no malware remnants remained.

Recovery Process

• Infection Depth Analysis: Identifying the specific blocks encrypted by the .jzrxWYIHi virus within the 6 GB file.
• Manual Block Reconstruction: Surgically repairing the corrupted data segments to restore the database’s internal logic.
• Advanced Data Extraction: Utilizing the Excellent SQL Database Recovery Tool to pull tables and records into a healthy container.
• 100% Integrity Validation: Comprehensive testing of the SQL schema to ensure total data consistency and zero loss.
• ERP Integration: Verification that the restored database is fully functional and ready for immediate ERP use.

Recovery Results

• Recovery Integrity: 100%
• Recovered Files: SQL Server 2005 Primary Database Files
• System Status: Fully restored; the ERP system resumed normal operations immediately.
• Total Recovery Time: 1 Hour

Expert Reminder from Shenzhen Excellent Data Recovery Center: Frequent data backups are your strongest defense. If your server is hit by the .jzrxWYIHi virus, contact professionals immediately. We guarantee 100% original database recovery for specific failures, and we can restore databases of any size without delay.