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NOOS ransomware is now decryptable

IT News, Software Reviews, How To's & Computer Help. STOP/DJVU ransomware surpasses 290 versions, latest ones being WRUI, LMAS, URNB and FDCZ DJVU ransomware (alternative name: STOP) is the most widespread file-encrypting virus of 2021 that uses RSA. Damn it!Another crappy OS!Pease like and subscribe!

Contents

• NOOS ransomware is now decryptable
• Remove NOOS ransomware virus

NOOS ransomware is a malicious computer virus that targets Windows systems to encrypt all files on them. It is the 169th version of STOP/DJVU ransomware. Once installed on a target PC, the virus encodes all files using AES/RSA ciphers (using private and public keys), marks files using .noos extensions. The encrypted files can no longer be accessed. The virus leaves a ransom note – _readme.txt, which demands $490-$980 ransom paid in Bitcoins. Luckily, this variant can now be decrypted, thanks to Michael Gillespie.

Once NOOS ransomware ensures that the victim’s files are encrypted and cannot be restored by any means, it creates a ransom note, which is saved on the computer as _readme.txt file. This file contains lengthy instructions from cybercriminals.

The attackers suggest paying the ransom quickly. If the victim contacts the attackers via provided email addresses ([email protected] or [email protected]) within 72 hours, the Noos decryption software then costs $490 in Bitcoin. Otherwise, the price doubles to $980.

Full contents of the ransom note are shown down below.

ATTENTION!
Don’t worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
[removed link]
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that’s price for you is $490.
Please note that you’ll never restore your data without payment.
Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours.
To get this software you need write on our e-mail:
[email protected]
Reserve e-mail address to contact us:
[email protected]
Your personal ID:
f83mhflGeRsMrnVpw404tlm4RWx1y69zcacA5hSp3l60BnYwdt0

The Noos virus prevents any free data recovery options by executing a list of command-line tasks, including Volume Shadow Copies deletion, stopping Windows Defender, Background Intelligent Transfer Service and other important processes that could interfere with ransomware’s behavior.

What is more, this crypto-virus tends to install another malicious software, widely known as Azorult, on the victim’s computer. It is a password-stealing Trojan that can put all your financial or personal accounts at risk.

Needless to say, users infected with this STOP/DJVU variant, are advised to remove NOOS ransomware virus and related malware as soon as possible. We provide lengthy removal guidelines below the article.

Threat Summary

Ransom-demanding viruses spread silently

Various crypto-malware like NOOS, NESA, BOOT, Phobos or RECO all spread very similarly. The typical ransomware distribution methods are listed below.

• Malicious emails, including compromised attachments or dangerous links.
• Illegal downloads, such as software cracks or keygens.
• Vulnerabilities in Windows OS or software.
• Exploit kits.

Cyber attackers tend to leverage people’s curiosity, inattentiveness and other traits making them to click on malicious links or leave their computers vulnerable.

If you want to learn how to prevent ransomware attacks and keep your files safe, consider reading guidelines on how to prevent this type of malware.

Remove NOOS ransomware virus

If you want to successfully remove NOOS file extension virus, follow the guidelines given below. It is extremely important to remove the virus in Safe Mode, otherwise, you might encounter certain obstacles caused by the virus. Such type of malware tends to block any kind of security software, and that is why you need the Safe Mode.

Things to do after removing the virus

NOOS ransomware removal should go smoothly if you use our instructions. After removing the malware, you should:

1. Check what data backups you have. You can try to collect as many files as you can from your emails, online clouds, phone, and other locations in case you didn’t have a backup. Unfortunately, at the moment we cannot suggest any decryption tools because there simply aren’t any at the moment.
2. Use Emsisoft STOP/DJVU Decryptor. You can find a guide on how to recover .noos extension files using the decryption tool here.
3. Change your passwords. As mentioned previously, Azorult Trojan can steal sensitive data including your passwords and use them for malevolent purposes, so change as many as you can right after removing the infections from your PC.

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NOOS ransomware Removal Guidelines

Method 1. Enter Safe Mode with Networking

Step 1. Start Windows in Safe Mode with Networking

Before you try to remove the virus, you must start your computer in Safe Mode with Networking. Below, we provide the easiest ways to boot PC in the said mode, but you can find additional ones in this in-depth tutorial on our website – How to Start Windows in Safe Mode. Also, see a video tutorial on how to do it:

Instructions for Windows XP/Vista/7 users

1. First of all, turn off your PC. Then press the Power button to start it again and instantly start pressing F8 button on your keyboard repeatedly in 1-second intervals. This launches the Advanced Boot Options menu.
2. Use arrow keys on the keyboard to navigate down to Safe Mode with Networking option and press Enter.
   

Instructions for Windows 8/8.1/10 users

1. Open Windows Start menu, then press down the Power button. On your keyboard, press down and hold the Shift key, and then select Restart option.
2. This will take you to Windows Troubleshoot screen. Choose Troubleshoot > Advanced Options > Startup Settings > Restart.Tip: If you can't find Startup Settings, click See more recovery options.
3. In Startup Settings, press the right key between F1-F9 to enter Safe Mode with Networking. In this case, it is the F5 key.

Step 2. Remove files associated with the virus

Now, you can search for and remove NOOS ransomware files. It is very hard to identify files and registry keys that belong to the ransomware virus, Besides, malware creators tend to rename and change them repeatedly. Therefore, the easiest way to uninstall such type of a computer virus is to use a reliable malware removal program. In addition, we suggest trying System Mechanic Ultimate Defense, which includes data recovery tool and many other useful features.

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Method 2. Use System Restore

In order to use System Restore, you must have a system restore point, created either manually or automatically.

Step 1. Boot Windows in Safe Mode with Command Prompt

Instructions for Windows XP/Vista/7 users

1. Shut down your PC. Start it again by pressing the Power button and instantly start pressing F8 button on your keyboard repeatedly in 1-second intervals. You will see Advanced Boot Options menu.
2. Using arrow keys on the keyboard, navigate down to Safe Mode with Command Prompt option and press Enter.
   

Instructions for Windows 8/8.1/10 users

1. Launch Windows Start menu, then click the Power button. On your keyboard, press down and hold the Shift key, and then choose Restart option with the mouse cursor.
2. This will take you to Windows Troubleshoot screen. Choose Troubleshoot > Advanced Options > Startup Settings > Restart.Tip: If you can't find Startup Settings, click See more recovery options.
3. In Startup Settings, press the right key between F1-F9 to enter Safe Mode with Command Prompt. In this case, press F6 key.

Step 2. Start System Restore process

1. Wait until system loads and command prompt shows up.
2. Type cd restore and press Enter, then type rstrui.exe and press Enter. Or you can just type %systemroot%system32restorerstrui.exe in command prompt and hit Enter.
   
3. This launches System Restore window. Click Next and then choose a System Restore point created in the past. Choose one that was created before ransomware infection.
4. Click Yes to begin the system restoration process.

After restoring the system, we recommend scanning the system with antivirus or anti-malware software. In most cases, there won't be any malware remains, but it never hurts to double-check. In addition, we highly recommend checking ransomware prevention guidelines provided by our experts in order to protect your PC against similar viruses in the future.

Alternative software recommendations

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Malwarebytes Anti-Malware

Removing spyware and malware is one step towards cybersecurity. To protect yourself against ever-evolving threats, we strongly recommend purchasing a Premium version of Malwarebytes Anti-Malware, which provides security based on artificial intelligence and machine learning. Includes ransomware protection. See pricing options and protect yourself now.

System Mechanic Ultimate Defense

If you're looking for an all-in-one system maintenance suite that has 7 core components providing powerful real-time protection, on-demand malware removal, system optimization, data recovery, password manager, online privacy protection and secure driver wiping technology. Therefore, due to its wide-range of capabilities, System Mechanic Ultimate Defense deserves Geek's Advice approval. Get it now for 50% off. You may also be interested in its full review.

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Disclaimer. This site includes affiliate links. We may earn a small commission by recommending certain products, at no additional cost for you. We only choose quality software and services to recommend.

This article was first published on October 2, 2019, and updated on October 4, 2019.

Norbert Webb is the head of Geek’s Advice team. He is the chief editor of the website who controls the quality of content published. The man also loves reading cybersecurity news, testing new software and sharing his insights on them. Norbert says that following his passion for information technology was one of the best decisions he has ever made. “I don’t feel like working while I’m doing something I love.” However, the geek has other interests, such as snowboarding and traveling.

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