LockBit 3.0 Black Ransomware Decryptor

Bydecryptor

Our response engineers maintain a bespoke decryptor and workflow tailored to LockBit 3.0 Black—the modern evolution of the LockBit RaaS ecosystem. This strain encrypts files with a hybrid AES-256 + RSA-2048 scheme and tags each item with a random 9-character extension (for example, .3R9qG8i3Z). Ransom notes mirror that token (e.g., 3R9qG8i3Z.README.txt) to bind your case to a unique ID.

The decryptor is designed to:

  • Safely analyze encrypted samples inside an isolated sandbox,
  • Detect variant-specific markers and the per-victim token, and
  • Restore data through a tightly logged, verifiable decryption process.

It’s available in both cloud-assisted and offline/air-gapped modes and always starts in read-only validation to protect evidence.

Affected By Ransomware?
Get Help Now Send Us Email

How the Decryptor Works

After you provide sample encrypted files and the ransom note, our tooling fingerprints the payload—matching headers, the 9-char scheme, and crypto structure against our case library. If it aligns with a supported pattern or a workable weakness, we perform a Proof-of-Concept (PoC) decrypt on a small file set. Once validated, we proceed to full restoration under analyst supervision while generating integrity logs for insurance and legal use.

Requirements:

  • Ransom note like 3R9qG8i3Z.README.txt
  • 2–5 encrypted samples with the random 9-char extension
  • Admin privileges on a clean recovery host
  • Optional connectivity for cloud key checks

Immediate Response Checklist

  1. Isolate endpoints from LAN/Wi-Fi/VPN and unmount shared or backup volumes.
  2. Preserve artifacts (encrypted files + notes) exactly as found—no renaming or edits.
  3. Collect evidence: EDR/AV alerts, Windows Event Logs, firewall/proxy telemetry, suspicious executables.
  4. Capture RAM, if possible—some campaigns leave ephemeral material in memory.
  5. Engage a professional team; avoid contacting the actor’s Telegram or links yourself.

Recovery Paths

Free / Standard

Backups — Restore from offline or immutable copies after checksum validation.
Public tools — No free decryptor exists for LockBit 3.0 at the moment. Keep an eye on No More Ransom for future releases if a cryptographic flaw is published.

Specialist

Forensic decryptor service — We start with PoC decrypts, then scale up with full chain-of-custody logging.
Paying the ransom (not recommended) — Even small demands (e.g., the “Mr.Robot” note asks ~$45) don’t ensure reliable keys or prevent leaks; consult counsel and your insurer before any decision.

How to Use Our Decryptor — Step-by-Step

Assess the Infection — Confirm the random 9-character extension (e.g., .3R9qG8i3Z) and the matching README.txt.
Secure the Environment — Disconnect affected systems and block cloud/drive syncs.
Engage Our Team — Upload the note and a few samples via our secure intake; we’ll provide a timeline.
Run the Decryptor — Execute with admin rights; cloud checks are optional if you prefer offline mode.
Enter the Victim/Decryption ID — Copy the 32-hex ID from the note to bind your session.
Start Recovery — The tool restores files to a clean target path and produces integrity + completion logs.

Affected By Ransomware?
Get Help Now Send Us Email

Understanding LockBit 3.0 Black

Profile — A modular RaaS platform known for rapid updates, broad affiliate use, and layered extortion.
“PC Locker 3.0 by Mr.Robot” — A branded variant that borrows LockBit’s playbook, adds low-entry ransoms and “mentorship” marketing, and uses Telegram for contact.
Behavior — Encrypts documents, DBs, images, configs; deletes shadow copies; disables recovery; and often conducts exfiltration to enable double/triple extortion.

Ransom Note 

Typical name: 3R9qG8i3Z.README.txt
Distribution: Dropped in each encrypted folder.
Excerpt from the Ransom Note:

~~~ PC Locker 3.0 by Mr.Robot~~~

>>>> Your data are stolen and encrypted

To get your files back you will have to pay a one-time fee of $45 in bitcoin or monero.

>>>> You need contact us and decrypt one file for free on these platforms with your personal DECRYPTION ID

Contact the following account on telegram

@mr_robot_unlock

or paste this link in your browser

https://t.me/mr_robot_unlock

>>>> Your personal DECRYPTION ID: 4B75BFA39AA770FC5EA571B04865E784

>>>> Warning! Do not DELETE or MODIFY any files, it can lead to recovery problems!

>>>> Warning! If you do not pay the ransom you will not receive you files NO EXCEPTIONS!

>>>> Warning! Any attempt to negotiate or you don’t want to pay is INSTANT BLOCK!

>>>> Advertisement

Would you like to earn thousands of dollars $$$ ?

We sell mentorship for stealers, DDOS and ransomware.

We only work with professionals and people with money DO NOT WASTE OUR TIME.

—————————————————————————————————

IOCs, Detections & Technical Indicators

Name: LockBit 3.0 Black (aka PC Locker 3.0 by Mr.Robot)
Extension: 9-character random suffix (e.g., .3R9qG8i3Z)
Ransom note: [random9].README.txt
Encryption: AES-256 + RSA-2048
Example ID: 4B75BFA39AA770FC5EA571B04865E784

Detections (examples):

  • ESET — Win64/Filecoder.Lockbit.Black
  • Kaspersky — Trojan-Ransom.Win32.LockBit3.gen
  • Bitdefender — Gen:Heur.Ransom.LockBit3.0
  • Microsoft — Ransom:Win64/LockBitBlack.A!MTB

Common Indicators:

  • Shadow copy deletion / recovery disabled
  • Notes bearing “PC Locker 3.0 by Mr.Robot”
  • Telegram handle @mr_robot_unlock present in the note
  • Suspicious binaries under user/Temp paths

TTPs (MITRE-aligned)

  • Initial Access: Phishing, trojanized installers, stolen credentials/RDP.
  • Execution: AES/RSA file encryption; mass renaming with 9-char suffix.
  • Persistence: Registry/startup modifications.
  • Exfiltration: Staging and upload of sensitive data prior to encryption.
  • Impact: Encryption + extortion; possible DDoS pressure for non-payment.
Affected By Ransomware?
Get Help Now Send Us Email

Victim Landscape — Regions, Sectors & Timeline

Regions: Sectors:
Timeline:

Conclusion

LockBit 3.0 Black fuses robust encryption with relentless extortion, and the “PC Locker 3.0 by Mr.Robot” spin underscores how affiliates tailor tactics to widen their reach. Even when a ransom appears small, paying rarely guarantees safe or complete restoration and can expose an organization to ongoing pressure. The most reliable path forward is disciplined incident handling: isolate systems at once, preserve evidence, lean on verified PoC-based decryption or clean backups, and strengthen long-term resilience with layered identity controls, tight RDP posture, continuous monitoring, and offline or immutable backups. Acting early and methodically is the difference between a contained incident and a protracted operational crisis.

Frequently Asked Questions

Currently, there is no free public decryptor for LockBit 3.0 variants.

It spreads via phishing, cracked software, and credential theft, often leveraging social engineering and remote desktop attacks.

Each infection uses a unique 9-character random string appended to encrypted files, linking them to the victim’s unique ID.

No. Payment does not guarantee recovery and encourages future attacks.

Apply system updates regularly, restrict RDP access, enforce MFA, and maintain offline, immutable backups.

MedusaLocker Decryptor’s We Provide

MedusaLocker Ransomware Versions We Decrypt

CyberLock

GonzoFortuna

Destroy

Ako

Xciphered

Spider

Root

Root4

DavidHasselhoff

Similar Posts

  • Jackalock Ransomware Decryptor

    Bydecryptor

    Jackalock Ransomware Decryptor: Your Complete Recovery Companion Jackalock ransomware has carved a name for itself as a high-risk cyber menace in the digital landscape. This malicious software invades networks, locks critical files with encryption, and extorts victims by demanding payments in exchange for a decryption key. This guide presents a comprehensive exploration of Jackalock’s behavior,…

  • KIMO Ransomware Decryption

    Bydecryptor

    KIMO Ransomware: Complete Recovery Playbook | Decryptors.org Threat Intelligence & Incident Response KIMO Ransomware: Complete Enterprise Recovery & Analysis Guide By: Decryptors.org Threat Intelligence Team Framework: NIST SP 800-61 SEVERITY: HIGH / ANOMALOUS Quick Navigation 1. Executive Summary: The Anomalous KIMO Threat 2. Threat Intelligence & Technical Specifications 3. Ransom Note Analysis: The Missing Extortion…

  • Snojdb Ransomware Decryptor

    Bydecryptor

    Snojdb ransomware is a newly surfaced file-encrypting malware strain first brought to attention by victims on the 360 Security community forum in late 2025. According to early reports, users noticed that personal files were abruptly renamed and rendered unusable after being appended with the “.snojdb” extension. In addition to modifying filenames, the malware also alters…

  • DarkHack Ransomware Decryptor

    Bydecryptor

    DarkHack ransomware has emerged as a severe digital threat, locking vital files and demanding steep payments for decryption. This extensive guide dives deep into how DarkHack functions, the fallout of its attacks, and how users can regain access using a specially engineered decryptor tool—without giving in to extortion. Affected By Ransomware? Introducing the DarkHack Decryption…

  • Desolator Ransomware Decryptor

    Bydecryptor

    Desolator Ransomware Decryptor: Comprehensive Guide to Recovery and Protection Desolator ransomware ranks among the most dangerous malware threats in the current cybersecurity landscape. Known for its ability to lock down critical files and demand cryptocurrency ransoms, this malware has disrupted numerous systems worldwide. This in-depth resource explores how Desolator ransomware operates, the extent of its…

  • Benzona Ransomware Decryptor

    Bydecryptor

    Benzona ransomware is a newly observed encryption-based malware discovered during the examination of fresh file submissions on the VirusTotal platform. It is part of a broad class of ransomware strains that render a victim’s files inaccessible using strong cryptographic methods and then demand payment for decryption. After Benzona completes its encryption process, each affected file…