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ExoBuilder ransomware. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Ransomware

ExoBuilder ransomware locks the screen of the infected computer

ExoBuilder ransomware virus image

ExoBuilder virus is a malicious program which currently performs screen lock function to swindle money from inexperienced computer users. Once it is on the system, it drops numerous files with “UnlockYourFiles[random number]” name. The screen is frozen in a fullscreen mode, and the victim is demanded to pay 2 BTC ($22848) to receive a decryption tool. 

While currently, malware doesn't encrypt files, experts note that hackers tend to update their products weekly or monthly. Likewise, there is a high possibility that this malicious program will start encoding data soon. If you have been infected, we suggest you to remove ExoBuilder before it compromises your data. Feel free to use the elimination instructions which are presented at the end of this article.

Furthermore, crooks try to convince their victims to pay the ransom by leaving an intimidating ransom note. They state that all of the data stored on the computer is compromised by ExoBuilder ransomware and the users should follow a 4-step guide to recover their files. Criminals finish their message with the following threat:

lf you try to CLOSE this procces or SHUTDOWN the computer,
your files will be DELETED FOREVER!!!


Only way to RECOVER your files is to PAY 2 BTC

However, as we have mentioned before, this malicious program does not encrypt your files. Although, it is possible that ExoBuilder virus might exploit your system's vulnerabilities to infiltrate other high-risk computer infections, such as Trojan Horses, spyware or ransomware. Likewise, we recommend neither trusting the hackers nor paying the ransom.

Note that 2 BTC equals to approximately $22848 which is an enormous amount of money. Cybercriminals do not give you any guarantees that after the payment you will be provided with ExoBuilder decryptor. Therefore, you can be asked to pay even more money every time you transfer the funds. 

We recommend you to initiate ExoBuilder removal as soon as you notice an extensive amount of UnlockYourFiles[random number] files or your computer screen freezes. It is the best option to protect your data from encryption and avoid financial losses. Use Reimage or Plumbytes Anti-MalwareNorton Internet Security since the manual elimination of the ransomware might lead to further computer damage.

Illegal downloads and spam emails are the primary ransomware sources

While a vast of people want to save money, they tend to illegally download numerous files, such as music, films, videos, games, etc. However, it is essential to understand the risks of such actions since hackers often put malicious programs on peer-to-peer (P2P) networks[1]

It is hard to determine the origins of the file you want to download because criminals might cover it with a deceptive appearance. In other words, the data might imitate popular software like Adobe Flash Player while in reality, it holds an executable of the ransomware. 

Therefore, we highly recommend you to avoid downloading programs illegally. Instead, you should always scan the files with a reputable security software before you get it. Additionally, stay away from emails sent from unknown senders since criminals often distribute ransomware via spam email letters[2].

They try to lure people into clicking on them by pretending to be legitimate companies. You can receive a message with a subject line like “Invoice-[company's name]-[random numbers]” which contains an attachment. Note that such email might be merely a trick to infiltrate ransomware. Likewise, carefully monitor your browsing routine and double-check the letters you attempt to open. 

Terminate ExoBuilder without complications

According to[3] experts, even though ExoBuilder virus does not encrypt data, it is equally dangerous. While it is on the system, you won't be able to access your computer or data due to the lock screen function. During that time, hackers might infiltrate numerous malicious programs on your system. Note that to clean your computer from infections, you have to possess specific IT skills.

Likewise, we recommend you to remove ExoBuilder automatically and do not risk your safety. The best option would be to pick Reimage, Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security and let it scan your system thoroughly. Shortly after, your computer will be cleaned from all malicious programs.

Additionally, ransomware might block the installation of the security software. You can circumvent it by rebooting your PC to Safe Mode. If you are not aware how to do that, follow the ExoBuilder removal guide which is just below this article. We advise you to read it attentively since all of its steps are important and you shouldn't skip them. 

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To remove ExoBuilder virus, follow these steps:

Remove ExoBuilder using Safe Mode with Networking

The instructions below will help you to install an antivirus program if ExoBuilder doesn't allow you to do that.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove ExoBuilder

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete ExoBuilder removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove ExoBuilder using System Restore

Some users might face difficulties while performing the first method. In case the first method doesn't help, you can try to boot your computer into Safe Mode with Command Prompt.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of ExoBuilder. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that ExoBuilder removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove ExoBuilder from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

If ExoBuilder ransomware has been updated to encrypt data on the victimized computer, we attach the following methods which will help you to recover the corrupted files.

If your files are encrypted by ExoBuilder, you can use several methods to restore them:

You should try Data Recovery Pro

This professional tool was developed to help victims after ransomware attack. Additionally, it can recover files if you have accidentally deleted them. The following instructions will guide you through the procedure:

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by ExoBuilder ransomware;
  • Restore them.

ShadowExplorer can help

According to the experts, ExoBuilder doesn't delete Shadow Volume Copies from the targeted computer. Likewise, you can try to recover your data with the help of this tool:

  • Download Shadow Explorer (;
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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