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Bart ransomware virus. How to remove? (Uninstall guide)

removal by Olivia Morelli - -   Also known as Locky Bart ransomware | Type: Ransomware

Bart ransomware virus: encrypts files without connecting to the Internet 

Questions about Bart ransomware virus

Bart ransomware (you can also find it named as Locky Bart[1]) is a virus that encrypts your files and asks you to pay for their decryption. This malware variant appears to be created by the same authors as Locky virus, OsirisThor, and Aesir. It has already initiated two attacks against PC users and, unfortunately, they both can be considered successful. Just like Locky, it spreads as a JS file utilizing RockLoader malware[2] to silently download and install its infectious files on a compromised computer. What is more, Bart virus can work and corrupt victim’s files without using Internet connection, so it cannot be stopped by disabling network connection. It does not communicate with its command and control server and does not send the unique decryption key to it, but it localizes the encryption procedure and uses a slightly different technique to make files inaccessible. Instead of encrypting them with RSA or AES encryption algorithms[3], ransomware puts each file into a ZIP archive and protects it with a password. It appends .bart file extension or file extension to the filenames, and removes the System Restore Points. The archived file name looks like this: If you can find these signs of infiltration on your computer, make sure you remove Bart ransomware from the system.

Note: We have discovered that this computer threat checks default language setting before running the encryption process and in case the default language is Russian, Ukrainian, or Belorussian, the virus stops and uninstalls itself. Otherwise, it continues to run.

It is unlikely that this virus can leave any of your files unencrypted as it targets more than 160 different file types what means that all files with file extensions that this virus targets will be corrupted, including documents, photos, audio, video files and many more. Just like any ransomware-type virus traditionally does, Locky Bart leaves a ransom note which is called recover.txt. The virus even provides several translations for the ransom note, including French, Spanish, German and Italian languages. Besides, it changes desktop background with recover.bmp image looking identical to the one that Locky virus shows. This ransom note points the user to a payment site which can be accessed via TOR browser only. The payment site suggests Bart Decryptor for 3 BitCoins which is nearly 2000 US dollars, and that is an exceedingly big ransom price.[4] it is worth noting that this payment site looks very similar to Locky Decryptor‘s one. We do not recommend you to pay the ransom, as frauds might not provide you with the password for all these archives. Our suggestion is a quick Locky Bart removal. The best way to do it is to utilize an anti-malware program like Reimage.

Decrypting files with extension

This malware is an exceptionally strong variant of ransomware, because creators of Locky know what they are doing very well. They have already created one of the most successful and uncrackable computer virus in the history of malware what means their new virus is likely to be as strong as the previous one. Surprisingly, cyber security experts from AVG and AVAST have already created the decryption software for this ransomware.[5][6]. You will need one original file and one corrupted variant of it to retrieve the password of these archives. Do not forget to remove Bart virus from computer before you start the decryption process!

Speaking of other ransomware variants, the only possible way to recover lost files is to import them from a backup, sadly, not many people care to create them on time. If you do not have backups, but if you want to learn how to create them, please read this article – How to backup your files? If you have a backup, you should remove the virus first and then plug in the storage device into your PC to import files.

Bart malware versions

Bart v2.0 ransomware. Since malware researchers have managed to create Bart decryption tool, criminals have upgraded the ransomware and released an undecryptable version which does not add files to archives but encrypts them instead. This version has not been cracked yet, and it is not possible to recover files for free. The virus adds .bart2 file extensions to encrypted files and asks to pay a ransom. It places a ransom note on user’s PC that informs where the user can purchase the Bart decrypter.

Perl ransomware virus. The latest version of Bart ransomware hardly differs from its second version. The most noticeable difference is that it adds different file extensions to encrypted files – it renames them by adding .perl file extension. Reportedly, virus asks for a different sum of money from individual victims. Its ransom note also points users to Bart decrypter’s payment site; however, you should not support criminals by paying them. Unfortunately, files encrypted by .perl file extension virus cannot be decrypted.

Bart distribution methods

This virus spreads via malicious email campaigns that deliver a .zip file attachment. Typically, authors of this ransomware send emails with a subject Photos. Files attached to these malicious emails are titled as,, and similarly. These archives carry JavaScript code, and if the user launches it, it immediately downloads and installs RockLoader malware which is an intermediary loader. This malware downloads Bart virus and runs it. The easiest way to avoid infecting your PC with ransomware is to stay away from suspicious emails that come from unknown people or companies, and of course, keep the computer protected by installing the anti-malware software on it.

Bart removal guide

Please bear in mind that Bart virus is an extremely dangerous virus and that you cannot remove it manually unless you are a skilled IT expert. As we have said, this virus uses RockLoader malware to infiltrate the system. It has to be removed as well to forget about further problems related to this ransomware. Therefore, the best solution for Bart ransomware removal is running a full system scan with a powerful anti-malware application. In this case, we recommend using Reimage or Malwarebytes. We have no doubts that this ransomware will try using various techniques to prevent its elimination from your computer. If you can’t remove Bart virus because it keeps blocking your anti-spyware, follow instructions prepared by 2spyware security experts. 

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If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
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To remove Bart virus, follow these steps:

Remove Bart using Safe Mode with Networking

If you can’t launch your anti-spyware because of Bart virus, you need to reboot your computer to Safe Mode with Networking and try again. Make sure you run two scans – scan when you are in Safe Mode and a full system scan when you are in a normal mode.

  • 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 Bart

    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 Bart removal.

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

Remove Bart using System Restore

If Safe Mode with Networking option fails to work for you, you can also try System Restore. For that, use these steps:

  • 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 Bart. 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 Bart removal is performed successfully.

Bonus: Recover your data

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

Victims who have their PCs infected with the first Bart ransomware version can decrypt their files for free. You can find data recovery instructions below.

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

Recover your files encrypted with Bart ransomware with the help of Data Recovery Pro

If your files are locked by Bart ransomware, you can recover them with the help of Data Recovery Pro. It is a well-known tool which has been widely-used by PC users to revive lost files.

  • 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 Bart ransomware;
  • Restore them.

Use Windows Previous Versions feature to recover files encrypted by Locky Bart virus

If you had System Restore function enabled on your computer before infiltration of this ransomware, you can try recovering the most useful files with Windows Previous Versions feature. For that, follow these steps:

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Use Bart decrypter to get your files back

Malware researchers from AVG and AVAST have already created free decryption tools helping victims decrypt their encrypted data for free. These tools can be downloaded from here: Bart decrypter, Decryption Tool for Bart.

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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