Database Recovery Process

• 1. Forensic Integrity Scan
• A full scan of the 25 GB SQL Server database file was performed to identify which sectors were encrypted or corrupted by the .jj3 ransomware.
• 2. Encrypted Block Reconstruction
• The damaged database headers and file allocation structures were manually rebuilt to restore logical accessibility to the database.
• 3. Advanced Data Extraction

Using specialized database recovery tools, engineers extracted:

• tables
• records
• indexes
• stored procedures
• relational structures
• from the damaged .MDF file.

Schema Verification

The recovered data was mounted into a new SQL Server 2014 environment to verify database integrity and relational consistency.

ERP System Validation

• Finally, the recovered database was connected back to the client’s ERP application to confirm that the system could function normally.
• All core business functions were successfully restored.

Recovery Results

• Recovery Integrity: Nearly 100% data recovery
  Recovered Data: SQL Server 2014 database files (.MDF / .LDF)
  Database Size: 25 GB
  Total Recovery Time: 5 Hours
  System Status: ERP system fully operational

The client’s production environment was restored without paying any ransom to the attackers.