Remove STOP DJVU Ransomware and Recover Encrypted Files

Cybersecurity & Malware Intermediate 👁 13 views 📅 May 25, 2026

STOP DJVU ransomware encrypts files and demands payment. This guide covers removal, file recovery options, and prevention to protect your system.

Symptoms

STOP DJVU ransomware typically adds a file extension such as .djvu, .tro, .puma, or .adobe to encrypted files. Affected files become inaccessible and display a ransom note named _readme.txt or !!!READ_ME!!!.txt on the desktop. The note demands payment in Bitcoin (usually $490–$980) for a decryption key. Other symptoms include system slowdowns, disabled security software, and suspicious network activity.

Root Causes

STOP DJVU ransomware spreads primarily through:

  • Phishing emails with malicious attachments (e.g., fake invoices, shipping notices).
  • Drive-by downloads from compromised or malicious websites.
  • Trojanized software cracks, keygens, or pirated software.
  • Exploit kits targeting outdated software (e.g., Java, Adobe Flash, Microsoft Office).

Step-by-Step Fix

Step 1: Disconnect from the Internet

Immediately disconnect the infected computer from the internet and any network drives to prevent further encryption and communication with the command-and-control server.

Step 2: Boot into Safe Mode with Networking

  1. Restart the computer and press F8 (or Shift + Restart in Windows 10/11) during startup.
  2. Select Safe Mode with Networking from the Advanced Boot Options menu.

Step 3: Remove Ransomware with Malwarebytes

  1. Download Malwarebytes from the official website on a clean computer and transfer via USB.
  2. Install and run a full system scan.
  3. Quarantine and delete all detected threats.

Step 4: Use Emsisoft Decrypter for STOP DJVU

  1. Visit the Emsisoft Decryptor for STOP DJVU page and download the tool.
  2. Run the decrypter as administrator.
  3. Select the drive or folder containing encrypted files.
  4. Click Decrypt and wait for the process to complete.

Note: The decrypter works only for offline keys. If the ransomware used an online key, recovery may not be possible without the attacker's key.

Step 5: Restore Files from Backup

If you have a recent backup (external drive, cloud, or system restore point), restore your files after removing the ransomware. Ensure the backup is from before the infection date.

Alternative Fixes

  • Shadow Volume Copies: Use tools like ShadowExplorer to recover previous versions of encrypted files if Volume Shadow Copy was enabled.
  • Data Recovery Software: Tools like Recuva may recover files that were deleted after encryption (not the encrypted files themselves).
  • System Restore: Roll back Windows to a point before the infection, but note this may not recover encrypted files.

Prevention

  • Maintain regular backups on an external drive or cloud storage that is disconnected after backup.
  • Keep your operating system and all software updated.
  • Use a reputable antivirus/anti-malware suite with real-time protection.
  • Avoid opening email attachments from unknown senders.
  • Disable macros in Microsoft Office documents.
  • Enable controlled folder access in Windows Defender (Windows 10/11).
  • Educate users about phishing and safe browsing habits.

Additional Resources

For more information, visit the official Emsisoft Decryptor page or consult the No More Ransom project. If you need further assistance, contact a professional cybersecurity service.

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