Full Data Recovery from LockBit 4.0 Ransomware Attack on Veeam Backup

When a critical infrastructure provider was hit by the notorious LockBit 4.0 ransomware, the results were catastrophic: all production virtual machines and backup servers were encrypted, leaving the company completely paralyzed.

The organization’s Veeam Backup & Replication v11 environment, hosted on an HP RAID 6 server running Windows Server, was rendered useless after the ransomware attack encrypted their only available full and incremental backup files. With no ability to restore from backup, the risk of permanent data loss was imminent.

The Challenge: Ransomware Attack Disables Production and Backup Systems

Ransomware Variant: LockBit 4.0

Backup Software: Veeam Backup & Replication v11

Hardware: HP Server with 8 x 5TB drives in RAID 6 configuration

Impact:

Production VMs (file servers, databases) encrypted

Backup server compromised

All Veeam backup chains (1 full + 20 incrementals) encrypted

This high-severity cyberattack left the client unable to perform a traditional disaster recovery.

🛠️ The Solution: Expert Ransomware Data Recovery with Custom Engineering

The client turned to Ontrack, trusted experts in data recovery from ransomware-encrypted storage systems.

Step 1: Virtual RAID Reconstruction

Ontrack engineers virtually reconstructed the RAID 6 array, ensuring accurate disk parity and alignment across all eight drives. This allowed access to the corrupted volume where the encrypted backup files were stored.

Step 2: Volume Emulation and Data Extraction

Using advanced forensic imaging and volume virtualization, Ontrack extracted:

One full encrypted Veeam backup

20 associated incremental backup files

Step 3: Innovative Backup Chain Repair

The extracted full backup was corrupted by ransomware encryption. Ontrack developed a proprietary recovery technique to apply data from the incremental backups to repair the full image. This custom method reconstructed the backup chain, effectively restoring all critical data stored in the client's backup repository.

Ontrack was then able to extract the virtual disks from the damaged backup. Once extracted, Ontrack was able to repair the virtual disks and in the cases where they were too damaged to mount, extract the file data from inside the virtual disks.

The Outcome: 100% Recovery of Encrypted Backup Data

Thanks to Ontrack’s pioneering ransomware recovery services, the client was able to:

Restore all core virtual machines and databases

Avoid weeks or months of downtime and data reconstruction

Reintegrate fully recovered backup data into their production environment

The result? Complete business continuity—without paying a ransom.

Why Organizations Choose Ontrack for Ransomware Backup Recovery

Trusted Experts in ransomware data recovery services

Expertise in RAID reconstruction, virtual machine recovery, and encrypted backup chain repair

Proprietary tools and methods developed for complex cases like Veeam backup restoration after encryption

Facing a ransomware crisis?

Don’t wait. Ontrack are Trusted Experts in encrypted backup recovery.
🔗 Contact Ontrack and restore your data—without paying a ransom.

Share Print Page

By Device

By Solution

By Industry

Data Recovery

Tape Services

Data Destruction

Other Services

Ontrack EasyRecovery

Ontrack Desk

Data Erasure Software

Data Erasure Hardware

Ontrack PowerControls

Ontrack Partner Program

Partner Directory

Technology Partners

Technology Partners