How to remove Nppp ransomware from the operating system?

Also Known As: Nppp virus
Distribution: Moderate
Damage level: Severe

Nppp ransomware removal instructions

What is Nppp?

Nppp is a piece of malicious software, which is part of the Stop/Djvu ransomware family. It operates by encrypting the data of infected devices, in order to demand payment for the decryption tools/software. During the encryption process, all compromised files are appended with the ".nppp" extension; for example, a file originally titled something like "1.jpg" would appear as "1.jpg.nppp". Once this process is complete, a ransom note - "_readme.txt" is dropped onto the desktop.

The text file - "_readme.txt" - informs victims that their data has been encrypted with strongest encryption and unique key. The note states that recovery is possible by purchasing the appropriate decryption tool/software and unique decryption key (generated individually for each infection). If contact with the cyber criminals behind Nppp ransomware is established within the first 72 hours - the size of the ransom will be $490. Should communication be initiated later - $980. Contact is to be established via email (the message also contains two mail addresses). Prior to paying, users can attach one encrypted file (containing no valuable information) - to test decryption, free of charge. The note claims that meeting the ransom demands is the only method of decrypting the affected data. Unfortunately, it is true that in many cases of ransomware infections, without the involvement of individuals responsible - decryption is impossible. It might be, if the malicious program in question has significant bugs/flaws and/or is still in development. Whatever the case, it is expressly advised against meeting the demands of cyber criminals. Since often, despite paying - victims do not receive the promised decryption tools/keys. Hence, their files remain encrypted (which makes them utterly worthless), and the users also experience financial losses. Removing Nppp malware from the operating system - will prevent it from further encryptions. However, removal will not restore already encrypted data. The sole viable solution is recovering it from a backup, if one was created before the infection and was stored in a different location.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Nppp decrypt instructions (_readme.txt)

NetworkMazeCoomExe (JigSaw)JackSparrow are a few examples of malicious software similar to Nppp. Ransomware is designed to encrypt data and demand a ransom to be paid for the decryption. These programs/infections have two crucial differences: the cryptographic algorithm they use (symmetric or asymmetric) and the ransom size. Cyber criminals tend to prefer digital currencies (e.g. cryptocurrencies, pre-paid vouchers, etc.), due to transactions of them being difficult/impossible to trace. To ensure data integrity, it is recommended to keep backups in unplugged storage devices and/or remote servers (ideally, in several separate locations).

How did ransomware infect my computer?

Ransomware and malware infections primarily spread through spam campaigns, trojans, illegal activation tools ("cracks"), fake updaters and untrustworthy download channels. the term "scam campaign" defines scam emails sent on a mass scale. These letters are disguised as "official", "important", "urgent", "priority" and so on. They have infectious files attached (or contain download links of such). These attachments can be in various formats (e.g. archive and executable files, PDF and Microsoft Office documents, JavaScript, etc.) and when they are opened - it triggers the infection (i.e. download/installation of malware). Trojans are malicious programs, designed to cause chain infections. Rather than activate licensed software, illegal activation ("cracking") tools can download/install malicious content. Fake updaters cause infections by exploiting flaws of outdated programs and/or simply download malware instead of the updates. Download sources like: unofficial and free file-hosting websites, P2P sharing networks (BitTorrent, Gnutella, eMule, etc.) and other third party downloaders - are considered to be untrustworthy and can offer likewise suspect, even malicious content.

Threat Summary:
Name Nppp virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .nppp
Ransom Demanding Message _readme.txt
Ransom Amount $980 or $490
Cyber Criminal Contact and
Detection Names AVG (FileRepMalware), BitDefender (Trojan.GenericKD.33300020), ESET-NOD32 (A Variant Of Win32/Kryptik.HBGZ), Kaspersky (Trojan-Ransom.Win32.Stop.ko), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate malware infections our security researchers recommend scanning your computer with Spyhunter.
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Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

Dubious and/or irrelevant emails should not be opened, especially ones received from unknown/suspect addresses. Any attachments (or links) found in suspicious mail - must never be opened, as these files are a potential source of infection. It is recommended to only use official and verified download channels. Programs should be activated and updated using tools/functions, provided by legitimate developers; as opposed to with illegal activation tools ("cracks") and third party updaters - which are often used to cause malware infections. It is important to have a dependable anti-virus/anti-spyware software installed and kept up-to-date. Furthermore, it should be used for regular system scans and removal of detected threats/issues. If your computer is already infected with Nppp, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Nppp ransomware's text file ("_readme.txt"):


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:
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:

Reserve e-mail address to contact us:

Your personal ID:

Screenshot of files encrypted by Nppp (".nppp" extension):

Files encrypted by Nppp ransomware (.nppp extension)

Nppp ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Nppp virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Nppp ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Nppp ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Nppp are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by Nppp, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Nppp ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove Nppp ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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Nppp virus QR code
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