eCh0raix Ransomware Recovery Guide: Decrypt Your Synology NAS Files Without Paying

You walk over to your Synology NAS to access a family photo, and instead, you find a README_FOR_DECRYPT.txtt file in every folder. Your personal files have been renamed with a .encrypt extension, and they’re completely inaccessible. You’ve been hit by the eCh0raix ransomware, and the attackers are demanding a ransom in Bitcoin to get your data back.

Before you panic or consider paying, take a deep breath. There is hope.

Thanks to a critical mistake made by the attackers, we have developed a free tool that can help you recover your files. This guide will walk you through exactly what happened and how you can use our eCh0raix Universal Decryptor to reclaim your data without paying a cent.

Latest: VantaBlack Ransomware Recovery: How to Decrypt .35RUT Files

How eCh0raix Infected Your NAS and Its Critical Flaw?

The eCh0raix ransomware typically targets NAS devices that have been accidentally exposed to the internet, often through a misconfigured router setting like UPnP. Once inside, it runs a malicious script that encrypts your files using standard AES-256 encryption.

But here’s the attackers’ fatal flaw: their script is clumsy. To encrypt a file, it calls a standard system tool (openssl) and passes the secret encryption key as a plain-text command-line argument. Operating systems often log running processes, especially during a high-load event like a mass encryption. This means the key was left behind like a set of keys dropped in the mud.

In many cases, this key, along with the full command, is logged in a file named DeviceBusyList on the NAS’s root partition. If you can find that log, you can find the key to unlock everything.

Introducing the eCh0raix Universal Decryptor

Our decryptor is a free script that automates the entire recovery process. It does the heavy lifting for you:

1. It scans the root partition of your infected drive to find the DeviceBusyList log.
2. It extracts the plain-text AES-256 key from the log file.
3. It then uses that key to systematically decrypt every .encrypt file on your data partition, restoring them to their original state.

You don’t need to be a security expert to use it. You just need to follow our step-by-step instructions.

How to Use Our Free Decryption Tool

⚠️ Important First Steps:

• Disconnect your NAS from the internet immediately.
• Physically remove the hard drives from the NAS. You will need to connect them to a separate computer for recovery.

Step 1: Get the Decryptor Script

Download the official script directly from our repository:
https://github.com/lockbitdecryptor/Universal-eCh0raix-Decryptor

Step 2: Prepare Your Recovery Environment

The easiest and safest way to do this is with an Ubuntu Live USB. It creates a temporary Linux environment on any computer without affecting its main OS.

1. On a working PC, download Ubuntu Desktop and use a tool like Rufus or balenaEtcher to create a bootable USB drive.
2. Plug the USB drive and your infected NAS drives (using a SATA-to-USB adapter) into your recovery computer.
3. Boot from the USB drive and select “Try Ubuntu”.

Step 3: Mount Your NAS Drives

1. Open a Terminal in Ubuntu (Ctrl+Alt+T).
2. Install the necessary tools and activate your NAS volumes:
   bash sudo apt-get update sudo apt-get install -y lvm2 sudo vgscan sudo vgchange -ay
3. Create mount points and mount your partitions:
   bash sudo mkdir /mnt/nas_root sudo mkdir /mnt/nas_data sudo mount /dev/vg1/root /mnt/nas_root sudo mount /dev/vg1/volume1 /mnt/nas_data
   (Note: vg1, root, and volume1 are common names. If they don’t work, run sudo lvdisplay to find the correct names for your system.)

Step 4: Run the Decryptor

1. Make the script you downloaded executable:
   bash chmod +x ech0raix_decryptor.sh
2. Run the script:
   bash ./ech0raix_decryptor.sh
3. The script will ask for two paths. Enter them as follows:
   • Enter the full path to the ROOT partition: /mnt/nas_root
   • Enter the full path to the DATA partition: /mnt/nas_data
4. The script will find the key and ask for confirmation. Type yes and press Enter to begin the decryption process. This may take several hours.

Once complete, your recovered files will be in the /mnt/nas_data directory.

What to Do After Recovery

1. Verify and Back Up: Check your files to ensure they’ve been restored correctly. Then, back up everything to a separate, clean external drive.
2. Wipe and Rebuild: Securely wipe your original NAS drives and perform a fresh installation of DSM.
3. Secure Your NAS: This is crucial. Go into your router’s settings and disable UPnP. If you need remote access, set up a VPN instead of forwarding ports. This is the best way to prevent a future attack.

Final Word

You don’t have to be a victim. By using our free tool and securing your network, you can fight back against ransomware and protect your digital life. If this tool helped you, please consider sharing this guide to help others in the same situation.

For the official tool and more security resources, stay with us at https://lockbitdecryptor.com/.