How to uninstall Non ransomware from your system

Also Known As: NonRansomware virus
Distribution: Low
Damage level: Severe

Non ransomware removal instructions

What is Non?

Non (also known as NonRansomware) is high-risk ransomware discovered by malware researcher, GrujaRS. Research shows that developers proliferate this ransomware using a trojan-type infection called DanaBot. Once infiltrated, Non encrypts most stored data and appends filenames with the ".non" extension. For example, "sample.jpg" becomes "sample.jpg.non". Once data is encrypted, Non creates a text file called "HowToBackFiles.txt" and stores a copy in each existing folder. Additionally, Non records various system information (e.g., OS version, username, etc.) and sends it to a remote server.

The new text file contains a ransom-demand message stating that, to restore data, each victim must contact Non developers and pay a ransom. The cost depends on how quickly victims contact these people. Once payments are submitted, Non's developers supposedly return a decryption tool. Note, however, that the text file provides no email address. Therefore, it is very likely that (at time of writing) this ransomware is still in development and is simply being tested. Non encrypts data using the AES-128 encryption algorithm, but does not generate a random encryption key. It uses the system volume serial number as the password, which is a significant flaw. The system volume serial number comprises eight characters (e.g., "D1A8-F3A1") and, therefore, such a short password is easy to 'brute force'. Non's developers do not store these passwords on remote servers and they must be manually brute forced. In addition, ransomware developers should never be trusted. Research shows that these people often ignore victims, once payments are submitted. Therefore, paying typically gives no positive result and users are scammed. Never attempt to contact ransomware developers and certainly do not send any money. Fortunately, the Check Point cyber security company has released a decryption tool for this ransomware. Therefore, restoring data is straightforward. Simply select an encrypted folder and enter your personal ID, which is given in the aforementioned "HowToBackFiles.txt" text file. If, however, you encounter undecryptable ransomware, the only solution is to restore everything from a backup.

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

Non decrypt instructions

Non shares many similarities with NerasLooCipher0day[LOCKED], and dozens of other ransomware-type infections. Most ransomware compromises data (typically, by encryption) so that developers can blackmail victims by offering paid recovery of files. Infections of this type typically employ cryptographies that generate unique decryption keys for each victim. Therefore, if the virus is fully developed and has no bugs/flaws, restoring data manually without involvement of developers (contacting these people is not recommended) is impossible. These infections present a strong case for maintaining regular backups, however, store them on an unplugged storage device or remote server, since locally stored backups are compromised together with regular data. There is always the chance that servers or storage devices can damaged and, therefore, we strongly advise you to have multiple backup copies stored in different locations.

How did ransomware infect my computer?

Non is promoted using the DanaBot trojan, which is capable stealing various account credentials, taking screenshots, and performing various other malicious actions, however, ransomware-type infections are also proliferated using spam email campaigns (as is the case for the DanaBot trojan), third party software download sources, and fake software updaters and 'cracks'. Spam campaigns are used to send hundreds of thousands of emails that contain malicious attachments and messages encouraging recipients to open them. Files/links are often presented as important documents (receipts, invoices, bills or similar) in attempts to give the impression of legitimacy and increase the chance of tricking recipients. Unofficial software download sources (free file hosting websites, freeware download websites, Peer-to-Peer [P2P] networks, etc.) are used to present malicious executables as legitimate software. In this way, users are tricked into manually downloading and installing malware. Fake software cracks infect computers by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than updates. The same applies to fake software cracks, which inject malware rather than providing access to paid features. In summary, the main reasons for computer infections are poor knowledge of these threats and careless behavior.

Threat Summary:
Name NonRansomware virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .non
Ransom Demanding Message HowToBackFiles.txt
Detection Names (Encrypter.exe) Avast (Win32:Dh-A [Heur]), BitDefender (Generic.Malware.Tk.2E4B1991), ESET-NOD32 (A Variant Of Win32/Filecoder.NVS), Kaspersky (Trojan-Ransom.Win32.CryFile.aaan), Full List Of Detections (VirusTotal)
Rogue Process Name svchost.exe
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.
Additional Information This ransomware is distributed by a high-risk trojan called DanaBot.
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 NonRansomware virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
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?

To prevent this situation, be very cautious when browsing the Internet and downloading, installing, and updating software. Think twice before opening email attachments. Files/links that are irrelevant and those received from suspicious/unrecognizable email addresses should never be opened. Download software from official sources only, using direct download links. Third party downloaders/installers often include rogue apps, and thus these tools should not be used. The same applies to software updates. Keep installed applications and operating systems up-to-date, however, use only implemented functions or tools provided by the official developer. Software piracy is a cyber crime and the risk of infection is extremely high. Therefore, cracking installed applications should never be considered. Finally, have a reputable anti-virus/anti-spyware suite installed and running. These tools can detect and eliminate malware before the system is harmed. The key to computer safety is caution. If your computer is already infected with Non, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Non ransomware text file ("HowToBackFiles.txt"):

Attention !!!

All your files on this server have been encrypted.
Write this ID in the title of your message

To restore the files need to write to us on e-mail:

The price for restoration depends on how quickly you write tous.
After payment we will send you a decryption tool that will decrypt all your files.

You can send us up to 3 files for free decryption.
 -files should not contain important information
 -and their total size should be less than 1 MB

Do not rename encrypted files
Do not try to decrypt your data with third-party software,this can lead to permanent data loss!

Your ID: -

Screenshot of files encrypted by Non (".non" extension):

Files encrypted by Non

Screenshot of Non ransomware process ("svchost.exe") in Windows Task Manager:

Non ransomware in Task Manager

Screenshot of Non ransomware decryptor developed by Check Point (download link):

Non ransomware decrypter by Check Point

Non ransomware removal:

Instant automatic removal of NonRansomware virus: 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 NonRansomware virus. 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 Non 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 Non 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 Non 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 Non 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 Non, 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 Non 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 as well as 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 Non 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 virus and spyware activity level today:

Medium threat activity

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

QR Code
NonRansomware virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of NonRansomware virus on your mobile device.
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Platform: Windows

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