Enterprise Ransomware Recovery

LockBit Ransomware Recovery

LockBit 3.0 uses ChaCha20 symmetric encryption with RSA-2048 key wrapping. Breaking that math is not possible. What is possible: imaging your drives offline, scanning raw sectors for unencrypted fragments the malware missed, and checking whether your keys were seized during the February 2024 Operation Cronos takedown.

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Updated March 16, 2026

How LockBit Recovery Works

LockBit encrypts files using ChaCha20 (or AES-256 in earlier variants) and protects the per-file keys with RSA-2048 asymmetric encryption. No lab can reverse that math. Recovery depends on three facts: encryption is rarely 100% complete, deleted pre-encryption file copies persist on mechanical drive platters, and law enforcement seized over 7,000 LockBit decryption keys in February 2024. We image every drive offline using hardware write-blockers and PC-3000, then exploit those three vectors to extract usable data without paying anyone.

LockBit Variant Technical Breakdown

Each LockBit iteration changes its encryption pipeline, anti-forensic behavior, and propagation methods. The variant determines which recovery vectors are viable.

LockBit 2.0 (Red): Used AES-256-CBC for file encryption with RSA-2048 for key exchange. Deleted Volume Shadow Copies via vssadmin.exe delete shadows /all /quiet. Because it relied on a standard Windows binary, endpoint detection tools could intercept the deletion. Shadow copy recovery rates on mechanical HDDs were higher with this variant.
LockBit 3.0 (Black): Switched to multithreaded ChaCha20 for faster file encryption; RSA-2048 (and in some builds, Curve25519 with XChaCha20) for key protection. Deletes shadow copies via WMI COM objects (Win32_ShadowCopy enumeration and per-ID deletion), which bypasses vssadmin.exe monitoring. Uses ICMLuaUtil COM interface for UAC bypass. Payload is obfuscated with RC4 KSA and decrypted at runtime, making static analysis and signature-based detection less effective. File extensions are randomized rather than fixed.
LockBit Linux-ESXi Locker: Targets VMware ESXi hypervisors directly, encrypting .vmdk, .vmem, and .vmsn files at the datastore level. Does not depend on Windows APIs. Recovery requires extracting VMFS volume headers and .vmdk descriptor metadata from raw disk images taken offline; live mount attempts risk triggering further encryption or corruption of unencrypted extents.

LockBit Attack Chain

Understanding how LockBit entered your environment determines which drives contain recoverable data and which were fully encrypted. This timeline reflects common attack patterns documented by CISA and the Australian Cyber Security Centre.

Phase	Mechanism	Forensic Artifact	Recovery Implication
Initial Access	Exploited RDP, VPN vulnerabilities, phishing with macro-enabled documents	Windows Event Log 4624/4625, RDP bitmap cache, VPN logs	Drives attached before initial access often have pre-encryption shadow copies
Lateral Movement	PsExec, SMB exploitation, Group Policy Object (GPO) deployment, Cobalt Strike beacons	SMB connection logs, GPO modification timestamps, Prefetch files	Isolated network segments (air-gapped backups, offline NAS) may be entirely unaffected
Exfiltration	StealBit tool, cloud upload (Mega, anonymous FTP), before encryption begins	Network flow logs, DNS query anomalies, firewall egress records	Exfiltration precedes encryption; drives imaged during this window contain unencrypted data
Encryption	Multithreaded ChaCha20/AES file encryption, WMI shadow copy deletion, service termination	Ransom notes (.README.txt), encrypted file headers, event log gaps	Interrupted encryption leaves partial files; raw sector scan recovers unencrypted portions

Our Recovery Procedure for LockBit Cases

Every step uses hardware write-blockers. The infected drives never connect to a network or boot an operating system in our lab.

1
Isolate and Inventory
Disconnect all affected storage from the network. Document every drive (model, serial, capacity) and its role in the storage topology (production SAN, backup NAS, standalone server). Do not power on any drive that was connected during the attack until it is attached to a write-blocker.
2
Write-Blocked Forensic Cloning
Each drive is connected to PC-3000 or DeepSpar Disk Imager through hardware write-blockers. We create sector-by-sector clones of every member drive. On RAID arrays, each disk is imaged individually; we never allow the controller to initiate a rebuild, which would overwrite recoverable data with recalculated parity.
3
Check for Known Decryptors
We cross-reference the ransom note, encrypted file headers, and any available attacker IDs against the FBI IC3 portal (Operation Cronos keys), the No More Ransom Project, and ID Ransomware. If a public decryption key matches your variant, we apply it to the cloned image. No hardware recovery charges apply for decryption-only cases beyond the imaging fee.
4
Raw Sector Extraction
On mechanical hard drives, deleted files (including pre-encryption versions and Volume Shadow Copies) persist in unallocated sectors until physically overwritten. We scan the full disk image at the sector level for file signatures, NTFS MFT remnants, and VSS catalog entries. This is where most LockBit recoveries produce results; the encryption covers existing files, but their prior deleted versions remain on the platters.
SSD limitation: TRIM/UNMAP commands cause the SSD controller to zero deleted blocks in the background. If your encrypted drives are SSDs, the window for recovering pre-encryption file remnants from unallocated space is narrow. Imaging must happen before the controller completes garbage collection.
5
Virtual Array Reconstruction (RAID/NAS)
For multi-drive arrays, we reconstruct the virtual disk from cloned images. We calculate stripe size, parity rotation order, and sector alignment (512e vs 4Kn) from the cloned controller metadata. This virtual reconstruction allows us to scan the logical volume for unencrypted blocks across the full array without touching the original hardware. On degraded arrays where one or more drives failed during the attack, we rebuild parity from the surviving clones.

Operation Cronos and Free Decryption Keys

In February 2024, an international law enforcement coalition led by the FBI and UK National Crime Agency dismantled LockBit's infrastructure. The operation seized servers, arrested affiliates, and obtained over 7,000 decryption keys.

The seized keys were made available through the FBI IC3 portal and the No More Ransom Project. Not all keys work for all victims; the keys correspond to specific affiliate IDs and encryption sessions. We test every LockBit case against these databases as the first step in our assessment.

Before engaging any paid recovery service: Submit your ransom note and a sample encrypted file to the ID Ransomware identification tool and check the No More Ransom Project. If a free decryptor exists for your specific LockBit build, you do not need to pay for hardware-level recovery.

What No Lab Can Do

Break ChaCha20 or AES-256 encryption without the private key. The math does not have shortcuts.
Guarantee 100% file recovery from a fully encrypted volume. If every sector was encrypted and no shadow copies survived, those files are gone.
Recover deleted file remnants from SSDs where TRIM has already zeroed the blocks.
Decrypt files encrypted by a LockBit build whose keys were not captured during Operation Cronos.

Any company claiming guaranteed decryption of modern ransomware without keys is either lying or paying the ransom on your behalf and marking up the cost.

Ransomware Recovery Pricing

Ransomware recovery pricing follows our standard hard drive recovery tiers. The cost depends on the physical condition of your drives, not the ransomware variant. A healthy drive that just needs imaging and sector scanning falls at the lower end; a drive with failed heads that also needs hardware repair before we can image it falls at the higher end. Our no data, no fee guarantee applies to all ransomware cases.

Service Tier	Price	Description
Simple CopyLow complexity	$100	Your drive works, you just need the data moved off it Functional drive; data transfer to new media Rush available: +$100
File System RecoveryLow complexity	From $250	Your drive isn't recognized by your computer, but it's not making unusual sounds File system corruption. Accessible with professional recovery software but not by the OS Starting price; final depends on complexity
Firmware RepairMedium complexity – PC-3000 required	$600–$900	Your drive is completely inaccessible. It may be detected but shows the wrong size or won't respond Firmware corruption: ROM, modules, or translator tables corrupted; requires PC-3000 terminal access Standard drives at lower end; high-density drives at higher end
Head SwapHigh complexity – clean bench surgery50% deposit	$1,200–$1,500	Your drive is clicking, beeping, or won't spin. The internal read/write heads have failed Head stack assembly failure. Transplanting heads from a matching donor drive on a clean bench 50% deposit required. Donor parts are consumed in the repair
Surface / Platter DamageHigh complexity – clean bench surgery50% deposit	$2,000	Your drive was dropped, has visible damage, or a head crash scraped the platters Platter scoring or contamination. Requires platter cleaning and head swap 50% deposit required. Donor parts are consumed in the repair. Most difficult recovery type.

Hardware Repair vs. Software Locks

Our "no data, no fee" policy applies to hardware recovery. We do not bill for unsuccessful physical repairs. If we replace a hard drive read/write head assembly or repair a liquid-damaged logic board to a bootable state, the hardware repair is complete and standard rates apply. If data remains inaccessible due to user-configured software locks, a forgotten passcode, or a remote wipe command, the physical repair is still billable. We cannot bypass user encryption or activation locks.

All tiers: Free evaluation and firm quote before any paid work. No data, no fee on simple copy, file system, and firmware tiers. Head swap and surface damage require a 50% deposit because donor parts are consumed in the attempt.

Target drive: The destination drive we copy recovered data onto. You can supply your own or we provide one at cost. For ultra-high-capacity drives (20TB and above), the target drive costs approximately $400+ due to the large media required. All prices are plus applicable tax.

Data Recovery Standards & Verification

Our Austin lab operates on a transparency-first model. We use industry-standard recovery tools, including PC-3000 and DeepSpar, combined with strict environmental controls to make sure your hard drive is handled safely and properly. This approach allows us to serve clients nationwide with consistent technical standards.

Validated Clean Zone

Open-drive work is performed in a ULPA-filtered laminar-flow bench, validated to 0.02 µm particle count, verified using TSI P-Trak instrumentation.

Transparent History

Serving clients nationwide via mail-in service since 2008. Our lead engineer holds PC-3000 and HEX Akademia certifications for hard drive firmware repair and mechanical recovery.

Media Coverage

Our repair work has been covered by The Wall Street Journal and Business Insider, with CBC News reporting on our pricing transparency. Louis Rossmann has testified in Right to Repair hearings in multiple states and founded the Repair Preservation Group.

Aligned Incentives

Our "No Data, No Charge" policy means we assume the risk of the recovery attempt, not the client.

Technical Oversight

Louis Rossmann

Louis Rossmann's well trained staff review our lab protocols to ensure technical accuracy and honest service. Since 2008, his focus has been on clear technical communication and accurate diagnostics rather than sales-driven explanations.

We believe in proving standards rather than just stating them. We use TSI P-Trak instrumentation to verify that clean-air benchmarks are met before any drive is opened.

See our clean bench validation data and particle test video

LockBit Recovery Questions

Can LockBit-encrypted files be recovered without paying the ransom?

In many cases, yes. LockBit frequently fails to encrypt every file on disk. We image all drives offline using hardware write-blockers and scan raw sectors for unencrypted remnants, deleted Volume Shadow Copies (on mechanical drives), and temporary files the malware missed. We also check the FBI IC3 portal for Operation Cronos decryption keys released in February 2024; over 7,000 keys were seized and made publicly available.

Does LockBit delete Volume Shadow Copies?

LockBit 3.0 (LockBit Black) uses WMI COM objects to enumerate and delete shadow copies via the Win32_ShadowCopy interface, bypassing the vssadmin.exe command that older strains relied on. This WMI-based deletion is harder for endpoint detection to intercept. On mechanical hard drives, the deleted shadow copy data still exists on the physical platters until overwritten; we can often recover it through raw sector scanning if the drive is imaged before any further writes occur.

Our server RAID array was hit by LockBit. Can you recover it?

We recover data from LockBit-compromised RAID arrays by cloning each member drive individually using write-blocked PC-3000 and DeepSpar hardware. We reconstruct the virtual array offline, calculating stripe size, parity rotation, and sector alignment without initiating a controller rebuild. Rebuilding a degraded array after encryption destroys data; we avoid this entirely by working from cloned images.

LockBit encrypted our VMware ESXi datastores. Is .vmdk recovery possible?

The LockBit Linux-ESXi variant targets .vmdk files at the datastore level. We extract VMFS volume headers and .vmdk descriptor files from raw disk images taken offline. If the encryption was interrupted or incomplete, intact VM disk extents can be reassembled. We image the underlying storage (SAS/SATA drives or SSD) using write-blocked hardware before any live mount attempt.

What happened with Operation Cronos and the free decryption keys?

In February 2024, an international law enforcement operation led by the FBI and UK NCA seized LockBit infrastructure and obtained over 7,000 decryption keys. These keys were made available through the FBI IC3 portal and the No More Ransom Project. We check every LockBit case against these databases before beginning hardware-level recovery. If your encryption key was captured during the takedown, decryption costs nothing beyond the imaging fee.