This case study documents the high-speed restoration of a Seeyon OA Office System following a targeted attack by the .devos ransomware. By utilizing advanced forensic parsing of the InnoDB system tablespace, the AS Data Recovery team bypassed the encryption layer to achieve 100% data integrity for the client.
Client & Data Information
- Client Name: Confidential
- Data Type: MySQL 5.5 (Supporting Seeyon OA System)
- Data Capacity: 12 GB
- Ransomware Extension: .devos
- Primary Issue: Ransomware Encryption / OA System Failure
Incident Summary
The client’s Seeyon OA (Office Automation) server was compromised by the .devos ransomware variant. The attack encrypted the database files, effectively locking out the entire organization’s office management system. Standard decryption attempts were unsuccessful, and the client required an immediate solution to resume operations without negotiating with the attackers. AS Data Recovery was engaged to perform a deep-level forensic extraction of the encrypted database files.
Technical Analysis
Forensic analysis of the infected 12 GB MySQL environment revealed:
- Encapsulation Corruption: The .devos malware encrypted the file headers of the ibdata1 (system tablespace) and .ibd files.
- Page Integrity: Deep scanning identified that while the file-level structure was locked, the internal InnoDB data pages containing the Seeyon OA tables remained intact in the deeper sectors of the ibdata1 file.
- Recovery Feasibility: Using our proprietary MySQL Forensic Repair Tool, we determined that the relational data could be salvaged by parsing the raw tablespace fragments and rebuilding the data dictionary.
Recovery Solution
The recovery strategy focused on Low-Level Tablespace Extraction. Our engineers bypassed the OS-level encryption by interacting directly with the raw hex data of the ibdata1 file. By isolating the healthy data pages and mapping them to the original Seeyon OA schema, we reconstructed the tables and migrated them into a fresh, secure MySQL 5.5 environment.
Recovery Process
- Forensic Infection: Analysis Identifying the encryption depth of the .devos virus to locate unencrypted data fragments.
- Raw ibdata1 Parsing: Utilizing AS Data Recovery’s specialized tools to extract raw table data directly from the InnoDB system tablespace.
- Schema Alignment: Matching extracted records with the specific table structures required by the Seeyon OA system.
- Database Migration: Importing the 100% verified data into a new, hardened MySQL instance.
- OA System Integration: Configuring the Seeyon OA office system to connect to the restored database and verifying full functionality.
Recovery Results
- Recovery Integrity: 100% (Critical OA tables fully restored)
- Recovered Files: MySQL 5.5 System Tablespace and Data Files
- System Status: Seeyon OA system fully operational and ready for immediate use.
- Total Recovery Time: 3 Hours
Expert Reminder from AS Data Recovery: Ransomware attacks on OA systems can paralyze an entire organization. If your server is infected with .devos or similar malware, do not attempt to run unverified decryption tools, as they may permanently corrupt the database. Contact AS Data Recovery professionals immediately for emergency 24/7 restoration. We guarantee 100% original recovery for specific failures, regardless of database size.