How to recover .nnuz files?

The infection that focuses on the file locking functions and money demands from the victim can spread silently and cause the issues with the targeted machine without triggering any seen symptoms for the victim. users may notice speed or performance issues when the encryption^[1] algorithm is running and changing the original code of the found files.

Nnuz ransomware can affect images, audio, video files, and particular documents that look valuable or are commonly used, so can be indicated as important to the victim. These files are chosen, so the victim can be more eager to pay up when the affected data is important.

The extension that appears at the end of the original filename is indicating the name of this particular file-locker virus. This unique marker .nnuz is added to the end of the file, so the Picture.jpg becomes Picture.jpg.nnuz, and the original code is altered, so the file cannot be opened.

This is the main reason for the ransom demands^[2] and the purpose of the encryption. These threats are focused on altering data and demanding money. The direct payment of $980 in Bitcoin is asked via the ransom message that gets listed in the _readme.txt file. You should ignore these claims and scare tactics and move on with Nnuz file virus removal.

1. Remove the active threat

Virus creators often rely on other programs and deceptive, promotional sites that can spread the infection around the world. This ransomware can distribute the payload with eh help of other malware like trojans, worms, and macro viruses. these are methods more often used to deliver the initial virus.

Once the spam email attachment is opened or the malicious program downloaded on the machine, Nnuz ransomware can start the encryption process once the infiltration is completed. This is the main process, but other viruses and different files get added to the machine to keep the infection persistent.

You can and should remove the infection by running an anti-malware tool or security program, so the system is checked fully and all potential threats removed. You must rely on proper AV tools and security programs that are relying on AV detection^[3] and can terminate any intruders found on the system.

2. Decrypt the locked files

The threat is related to Djvu virus family that released the latest versions Dfwe and Fdcv recently. This family has versions coming out each week and sometimes three or four at a time. Samples of this family flood the internet and users cannot find the solution for the encryption because this is the malware that has updated the techniques.

These issues with advanced malware and encryption methods mean that the Nnuz file virus is not decryptable because these methods used during encryption rely on online keys and these are unique per every affected device. The infection can connect to the remote server and make the different keys for the decryption procedure.

Offline IDs, if used, can be specific to the version of the ransomware only, so helps with decryption for many victims at the time. It is rare, but these threats might fail to communicate with the servers and offline keys get used. If so, you can check the options for decryption.

• Download the app on official Emsisoft website.
• Once decrypt_STOPDjvu.exe shows up – click it.
• Follow the steps on the screen.
• The tool should locate the affected folders.
• You can also do it by pressing Add folder at the bottom.
  
• Press Decrypt.
  
  
• There are particular results that can occur indicating if the decryption is possible.

From here, there are three available outcomes:

1. “Decrypted!” will be shown under files that were decrypted successfully – they are now usable again.
2. “Error: Unable to decrypt file with ID:” means that the keys for this version of the virus have not yet been retrieved, so you should try later.
3. “This ID appears to be an online ID, decryption is impossible” – you are unable to decrypt files with this tool.

3. Restore corrupted system data

• Install FortectMac Washing Machine X9.
• Run the full system scan and wait for the complete analysis.
• Follow the on-screen steps.
• Allow the machine to get checked.
• Check the Summary.
  
  
• You can fix issues manually from the list.
• Purchasing a licensed version can help repair serious issues.

4. Recover the data with an app

• Get a tool like Data Recovery Pro from a trustworthy source.
• Follow installation instructions.
• Once that is finished, use the application.
• Select Everything or pick individual folders to recover.
• Press Next.
  
  
• Enable Deep scan at the bottom.
• Pick which Disk you want to be scanned.
• Scan.
  
  
• Hit Recover to restore files.

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