Case Study
Successful Recovery From RAID 5 Server Hit by LockBit 3.2 Ransomware
Critical mailbox data, PDFs, and MS Office files were locked and rendered inaccessible by the ransomware attack.
Overview:
This case study records how data recovery specialists at Stellar successfully recovered critical business data from a ransomware-affected RAID 5 server. The client, a leading name in the tourism sector, faced an operational crisis due to the ransomware attack.
Client Background and Problem Statement:
One of the biggest travel & tourism companies in India and the Asia-Pacific, which heavily relies on its data systems, was hit by a severe ransomware attack that encrypted its files and disrupted business operations.
The company’s data was encrypted by the LockBit 3.2 ransomware. The ransomware attack affected the company's RAID 5 servers, and the encrypted files were given the extension .KYN3evWPx. With critical mailbox data, PDFs, and MS Office files locked and rendered inaccessible, the client sought immediate intervention to restore its files.
Key Details of the Incident:
- Ransomware Type: LockBit 3.2
- File Extension: .KYN3evWPx (files were encrypted by LockBit 3.2 ransomware)
- Server Configuration: IBM RAID 5 (5 SAS drives, each 2TB; total capacity of 8TB)
- File System: NTFS
- Operating System: Windows Server 2012 R2 STD
- Data Type: MS Office files, mailbox data, PDFs, accounting data
Stellar’s Customized Data Recovery Approach:
1. Diagnosis and Root Cause Analysis: Upon receiving the client’s case, Stellar immediately initiated a detailed diagnostic investigation into the compromised RAID 5 server. Our team analyzed the configuration and scanned the system to understand the nature of the attack and its effect on the data. The inspection revealed that the LockBit ransomware had encrypted files across the RAID array, and the NTFS file system had been significantly impacted by the attack.
2. Drive Cloning and Data Preservation: To ensure the integrity of the original data and avoid any further damage during the recovery process, Stellar’s experts performed byte-to-byte cloning of all five SAS drives in the RAID 5 array. By creating exact copies of the affected drives, we preserved the data as-is, including encrypted files and the underlying structure of the RAID system
3. Rebuilding the RAID System Architecture: Rebuilding the RAID system was a critical step to accessing the data and reconstructing the array's architecture. Stellar’s technicians worked to map the system’s drive sequence and reconstruct the RAID configuration. This enabled us to regain access to the data blocks and prepare for further recovery operations.
4. Decrypting Files Using Custom Tools: One of the most crucial stages of the recovery process involved the decryption of ransomware-affected files. The technicians leveraged proprietary tools—developed in-house by our R&D department specifically to decrypt files effected by LockBit ransomware—on the reconstructed drive sequence. By applying the decryption algorithms, we managed to unlock the encrypted files and restore them to their original, usable format.
5. Deep Scanning and File Recovery: Stellar performed an advanced deep scanning process that allowed us to identify and recover critical files. This scanning method enabled us to retrieve not only the primary files but also emails and other critical data that were severely impacted by the ransomware. We ensured that every document was fully restored without any data corruption.
Stellar’s Data Recovery Success:
After completing the recovery process, Stellar successfully restored 100% of the client’s encrypted data. This included:
- MS Office files (Word, Excel, PowerPoint)
- Emails and email attachments
- PDF documents
- Accounting files and other critical business data
The client’s data was fully intact, uncorrupted, and made accessible again, enabling them to resume their operations without delays. Stellar's rapid and effective recovery helped avoid any significant business interruptions.
Why Stellar is the Trusted Partner for Ransomware Recovery:
This case is one of many examples of how Stellar has successfully assisted businesses in recovering from ransomware attacks. With a dedicated and expert team, customized solutions, and advanced tools, Stellar ensures that companies can regain their data, even after a devastating ransomware attack.
Stellar’s approach to ransomware recovery and data restoration showcases our commitment to delivering prompt, secure, and effective solutions. We have successfully restored data from complex ransomware-hit systems, earning the trust of businesses across India and abroad.
For more information about how we can help you recover from ransomware attacks or any other data loss scenario, reach out to Stellar Data Recovery.
Preventive Tips to Protect Against Ransomware Attacks by Stellar Experts:
-
Regular Data Backups:
Ensure that all critical data is backed up regularly to offline or cloud storage. Use automated backup solutions that run on a set schedule to minimize the risk of data loss. -
Implement Multi-Layered Security:
Protect your systems with a combination of antivirus software, firewalls, and intrusion detection systems. Regularly update these security measures to ensure they can counter the latest threats. -
Patch and Update Systems:
Keep your operating systems, software, and applications up to date with the latest security patches. Cybercriminals often exploit vulnerabilities in outdated software. -
Email Filtering & Phishing Prevention:
Use email filtering tools to detect and block malicious attachments and links. Train employees to recognize phishing attempts and avoid clicking on suspicious links or downloading unknown attachments. -
User Access Control:
Limit user access to sensitive data based on roles within the organization. Use strong authentication methods, such as two-factor authentication (2FA), to add an extra layer of security. -
Network Segmentation:
Divide your network into separate segments to contain potential ransomware spread. If one segment is compromised, the attack can be contained without impacting the entire network. -
Regular Vulnerability Scanning:
Perform regular vulnerability assessments and penetration tests on your systems to identify and fix any security gaps before cybercriminals exploit them. -
Educate Employees:
Regularly conduct security awareness training for employees to make them aware of ransomware risks and how to avoid falling victim to phishing emails and suspicious links. -
Use Endpoint Protection:
Install endpoint security solutions on all devices to detect and block ransomware before it can execute on your systems. -
Incident Response Plan:
Develop and maintain a robust incident response plan. Ensure that your team knows the steps to take in case of a ransomware attack, including isolating infected systems and notifying relevant authorities.
By following these preventive measures, businesses can reduce the risk of falling victim to ransomware attacks and safeguard their critical data.
Statement from the customer:
"Stellar's expertise in recovering our data from the LockBit 3.2 ransomware attack was invaluable. They quickly restored our encrypted files and ensured our business operations were back on track without significant delays."
Corporate User
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