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.Encrypted GX40 Virus – How to Remove

Article created to help remove the GX40 ransomware infection and restore files that have been AES encrypted with the .encrypted file extension appended.

A ransomware virus known as GX40 has been reported by malware researchers to encrypt files on the computers infected by it and then append the .encrypted file extension to them. After encryption, the files can no longer be opened and seem to be corrupt. The infection has also been reported to drop a ransom note with instructions on how to pay a hefty ransom fee to get the files back. Anyone who has been infected by the GX40 ransomware is advised to read the following article thoroughly.

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Threat SummaryGX40

Threat Summary



Type Ransomware
Short Description The malware encrypts users files using the AES encryption cipher, making direct decryption possible only via a unique decryption key available to the cyber-criminals.
Symptoms The user may witness ransom notes and “instructions” screen named GX40 – NOTICE, linking to a web page and a decryptor. Changed file names and the file-extension .encrypted has been used.
Distribution Method Via an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join our forum to Discuss GX40.
Data Recovery Tool Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.encrypted GX40 Virus – How Does It Infect

The infection process of GX40 ransomware is similar to any other ransomware virus out there. The virus may initially be distributed with the help of e-mail spam messages with malicious archives and attachments embedded within them. Once those attachments are embedded, they are accompanied by a deceitful messages that trick the user into opening them. They may pretend to be:

  • An invoice for a purchase the user is tricked to have made.
  • A document from a bank, claiming there is suspicious activity.
  • Fake PayPal, FedEx or other documents.

Once the malicious file within the archive is opened, the infection is immediate and the virus uses a loader to drop it’s payload.

Other methods of infection by GX40 ransomware is if the virus takes advantage of fake installers, fake Windows updates and any other file that may seem legitimate. It may even be encountered on torrent websites as a fake game patch or game crack that is usually used to license an unlicensed versions of programs or games.

The .encrypted GX40 Ransomware – Infection Activity

Once the loader of this virus has already dropped it’s malicious files on the victim computer, they are likely situated in the following folders:

  • %AppData%
  • %LocalLow%
  • %Roaming%
  • %Local%
  • %Windows%

Two of the malicious executables belonging to GX40 ransomware infection are recognized to be the following:

GX40 – PayPal Validator.exe

After being activated, the malicious files of the virus may contain a malicious code within them that might modify the shadow volume copies of the infected computer, so that they are deleted without the user noticing. This is achievable by executing the following commands, primarily the vssadmin line:

→ process call create “cmd.exe /c
vssadmin.exe delete shadows /all /quiet
bcdedit.exe /set {default} recoveryenabled no
bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures

In addition to this activity, the GX40 ransomware infection may also tamper with the Windows registry editor of the victim PC, making the malicious executable that encrypts files run when the Windows system boots:

→ HKEY_CURRENT_USER\Control Panel\Desktop\
HKEY_USERS\.DEFAULT\Control Panel\Desktop\

GX40 Ransomware – Encryption Process

The process of encrypting files by this virus is done with the assistance of the Rijndael encryption algorithm also known as AES. The cipher encrypts files in blocks which are 129 bits in size and the strength of it’s encryption may be 128, 192 or 256-bit(strongest) encryption. The encryption algorithm is also used by the U.S. government and it generates a symmetric key after encrypting files. This key is the same for all the locked files and it may be sent to the cyber-criminals’ command and control servers.

Among the files which the GX40 virus targets for encryption are the following types of important files:

  • Microsoft Office documents.
  • OpenOffice files.
  • PDF documents.
  • Text files.
  • Image files.
  • Audio files.
  • Videos.
  • Archived files and different types of archives.

After the encryption process is complete, the files become no longer able to be opened and are appended the .encrypted file extension. They may appear as shown on the image below:

After the encryption, the virus makes sure the user knows of it’s presence by dropping a screen note(see images at the start above) asking to pay an 80$ ransom. It has the following messages within it:

Main Screen:
All of your important files has been encrypted by Ransomware
GX40 Ransomware
Contact me to make payment and make sure to attach yor identifier
IDENTIFIER: {unique A-Z 0-9 digits

by : GX40
All Your Personal Files Are Encrypted
All your data (photos, documents, and other files) have been encrypted with a private and unique key generated fot this computer. It means that yout will not be able to access your files anymore until they’re decrypted. The private key is stored in our servers and the only way to receive your key to decrypt your files is making a payment.
The payment has to be done in Bitcoint to a unique address that we generated for you. Bitcoins are a virtual currency to make online payments. IF you don’t know to get Bitcoins, you can google “HOW TO BUY BITCINS” and follow the instructions.
YOU ONLY HAVE 2 DAYS TO SUBMIT THE PAYMENT! When the provided time ends, the payment will increase to $80. Also, if you dont pay in 7 days, your unique key wil be destroyed and you wont be able to recover your files anymore.
To recover your files and unlock your computer, you mush send 0.07214 BTC or 80 USD, to the next Bitcoin address : 12EN79yZyZpEvfnQPHUqyhEtrWU4W3UrDn

DX40 Virus – How to Remove it and Restore .encrypted Files

Before beginning the removal process of the DX40 infection, recommendations are to focus on backing up all the files of importance, no matter if they are encrypted or usable.

Then, since the DX40 virus may interfere with multiple Windows processes and keep active connection to hosts such as the reported https host www.academyx40.com, it is important to isolate the threat before removing it. One way to do it is by following the manual removal instructions below and after isolating the malware, you can go ahead and proceed with reverting the settings modified by the virus and remove the files yourself. However, if manual removal is not what you are going for, recommendations are to focus on performing the removal process automatically. The best way to do this according to experts is by downloading an advanced anti-malware tool, which will perform the removal processes and protect your computer from future infections, like DX40 ransomware.

After having removed the DX40 ransomware, it is time to focus on the encrypted files. For the moment there is no decryptor available for this particular ransomware threat. However, it is also good to know that there are alternative methods that you can try in step “2. Restore files encrypted by DX40 below”. They may not be 100 percent effective by they may also help recover some of your important files, at least until malware researchers find a free decryption solution, which if happens, we will post a link in this article.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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Step 1: Scan for GX40 with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.

scan for and delete ransomware virus step 2

3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

scan for and delete ransomware virus step 3

4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

scan for and delete ransomware virus step 4

If any threats have been removed, it is highly recommended to restart your PC.

Ransomware Automatic Removal - Video Guide

Step 2: Uninstall GX40 and related malware from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.
delete ransomware from windows step 1

2. In the field type in "appwiz.cpl" and press ENTER.
delete ransomware from windows step 2

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
delete ransomware from windows step 3Follow the instructions above and you will successfully delete most unwanted and malicious programs.

Step 3: Clean any registries, created by GX40 on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by GX40 there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.
delete ransomware virus registries step 1

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.
delete ransomware virus registries step 2

3. You can remove the value of the virus by right-clicking on it and removing it.
delete ransomware virus registries step 3 Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Boot Your PC In Safe Mode to isolate and remove GX40


Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows Key + R.
remove ransomware in safe mode step 1

2. The "Run" Window will appear. In it, type "msconfig" and click OK.
remove ransomware in safe mode step 2

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
remove ransomware in safe mode step 3
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.
remove ransomware in safe mode step 4

5. You can recognise Safe Mode by the words written on the corners of your screen.
remove ransomware in safe mode step 5

Step 5: Try to Restore Files Encrypted by GX40.

Method 1: Use STOP Decrypter by Emsisoft.

Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.

Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:

1 Right-click on the decrypter and click on Run as Administrator as shown below:

stop ransomware decryptor step 1

2. Agree with the license terms:

stop ransomware decryptor step 2

3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:

stop ransomware decryptor step 3

4. Click on "Decrypt" and wait for your files to be decoded.

stop ransomware decryptor step 4

Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.

Method 2: Use data recovery software

Ransomware infections and GX40 aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


What is GX40 Ransomware?

GX40 is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files. 

Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.

What Does GX40 Ransomware Do?

Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.

Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.

How Does GX40 Infect?

Via several ways.GX40 Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.

Another way you may become a victim of GX40 is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.

How to Open .GX40 files?

You can't without a decryptor. At this point, the .GX40 files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.

What to Do If a Decryptor Does Not Work?

Do not panic, and backup the files. If a decryptor did not decrypt your .GX40 files successfully, then do not despair, because this virus is still new.

Can I Restore ".GX40" Files?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .GX40 files. 

These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.

How To Get Rid of GX40 Virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.

It will scan for and locate GX40 ransomware and then remove it without causing any additional harm to your important .GX40 files.

Can I Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.

Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Germany - Offizielles Portal der deutschen Polizei

United States - IC3 Internet Crime Complaint Centre

United Kingdom - Action Fraud Police

France - Ministère de l'Intérieur

Italy - Polizia Di Stato

Spain - Policía Nacional

Netherlands - Politie

Poland - Policja

Portugal - Polícia Judiciária

Greece - Cyber Crime Unit (Hellenic Police)

India - Mumbai Police - CyberCrime Investigation Cell

Australia - Australian High Tech Crime Center

Reports may be responded to in different timeframes, depending on your local authorities.

Can You Stop Ransomware from Encrypting Your Files?

Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.

Can GX40 Ransomware Steal Your Data?

Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.

In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.

Can Ransomware Infect WiFi?

Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.

Should I Pay Ransomware?

No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.

What Happens If I Don't Pay Ransom?

If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.

Can a Ransomware Attack Be Detected?

Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.

It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.

Do Ransomware Criminals Get Caught?

Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.

About the GX40 Research

The content we publish on SensorsTechForum.com, this GX40 how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the GX40 ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.

As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.

How to recognize trustworthy sources:

  • Always check "About Us" web page.
  • Profile of the content creator.
  • Make sure that real people are behind the site and not fake names and profiles.
  • Verify Facebook, LinkedIn and Twitter personal profiles.

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