Buma Stemra Ransomware Virus – Removal Instructions

NameBuma Stemra
TypeRansomware, Trojan
Short DescriptionA winlocker type of ransomware preventing access to user PC.
SymptomsLocks the screen out and demands a 50 euro ransom. The ransom note is in Dutch and has the Dutch police and Buma Stemra logos in it.
Distribution MethodExploit Kits. Spam Mail Campaigns, Malicious Redirects, Spoof Mails
Detection toolDownload Malware Removal Tool, to See If Your System Has Been Affected By Buma Stemra
User ExperienceJoin our forum to follow the discussion about Buma Stemra.
Data Recovery ToolWindows 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.

buma-stemra-virusBeware, virus infections have increased, concerning a ransomware trojan, resembling the Dutch legitimate music rights protection organization Buma Stemra. Compared to the malicious virus that infects the user’s files and displays fear-inducing messages to average computer users in different languages (mainly in Dutch), the organization is concerned with protecting the rights of musicians by targeting file-sharing sites. What the virus does is use that very credibility to ‘convict’ the user into violating copyright law. It displays a message with the police logo as well as Buma Stemra’s logo on the user PC and completely locks the user out of their device, asking for ransom money, which is usually within 50 euros.

Buma Stemra Ransomware – How To Get Infected?

Cyber criminals have realized over the years that the most successful virus is not the one that remains undetected or does a great deal of damage because nowadays most viruses can do that. No, they have clearly understood that the most successful threat is the one that has affected the greatest amount of devices. This is why they embed viruses, like Buma Stemra in malicious links that may be advertised in various ways, primarily via mail. Such can be email spamming and spoofing campaigns, for example.

One particularly effective method is by a malicious redirect. Imagine you have a PUP on your computer, like browser hijacker for example. It may suddenly open a pop-up linking to a malicious site that may download the malware directly onto your computer. This method of infection is called a drive-by download.

Another way to get infected by a malicious web link is by clicking on a suspicious Facebook post. Most Facebook viruses feature posts with viral videos, luring users into downloading fake Flash Player or Youtube plugins to watch a video. Such plugins may contain the malware, so do not download any suspicious plugins. Always check the source with website checkers, such as Norton safe web, for example.

More about the Buma Stemra Virus

Unlike most ransomware infections that encrypt important user files, this ransomware belongs to a group, called ‘winlockers’. It essentially locks users completely out of their computers, using different objects that modify Windows settings. Since it locks the user out, some experts believe that it may be interacting with the screensaver of the device it affects in some way. This way, it may be able to be effective even if the computer is disconnected.

More so, this virus uses a message primarily in dutch, and if you are from another country and get it, you will become very frustrated and curious as to what is this. Similar to other rasnomware viruses, the instructions for payment may include anonymous networking and the usage of Ukash service to pay.

When you see this virus, make sure not to panic. Police Ransomware type of viruses is easy to spot because no actual law enforcement agency will want anonymous payment from the user via a service. More importantly no law enforcement agency will lock users out of their computer. Simply read the instructions below to see how easy it is to remove it with an advanced anti-malware program in offline mode.

Removing Buma Stemra Ransomware

An important thing to consider is to not to try to remove it while you have booted in everyday use Windows mode and were online, because it may initiate scripts that may either lock the user further out or even crash the computer and destroy data. This could be done by scripts from files on the computer that act as a ‘fail-safe’ for cyber-criminals. Security experts recommend removing it with an advanced anti-malware program that will look for malicious files in critical locations such as the Windows Registry Editor, %appdata%, %temp%, system32 and others.

To do this, you should isolate the threat first by booting in Safe Mode with no networking. Then, you should download on a USB stick from a safe PC a particular anti-malware program that will remove the Buma Stemra Virus and all associated files completely from your PC. After you install the updated anti-malware, you should scan your computer, and you may be all set. Also, after removing it, you should protect your files by backing them up and enabling Windows defense features. For more information on how to protect your files, boot in Safe Mode and scan your computer to remove Buma Stemra completely, please review the tutorial below:

Step 1: Start Your PC in Safe Mode to Remove Buma Stemra.

Removing Buma Stemra from Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.


For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.


3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Removing Buma Stemra from Windows 8, 8.1 and 10 systems:

Substep 1:

Open the Start Menu
Windows-10-0 (1)

Substep 2:

Whilst holding down Shift button, click on Power and then click on Restart.

Substep 3:

After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Substep 4:

You will see the Troubleshoot menu. From this menu you can choose Advanced Options.
Windows-10-2 (1)

Substep 5:

After the Advanced Options menu appears, click on Startup Settings.
Windows-10-3 (1)

Substep 6:

Click on Restart.
Windows-10-5 (1)

Substep 7:

A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart and boot into Safe Mode so you can scan for and remove Buma Stemra.

Step 2: Remove Buma Stemra automatically by downloading an advanced anti-malware program.

To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all Buma Stemra associated objects.

NOTE! Substantial notification about the Buma Stemra threat: Manual removal of Buma Stemra requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

Security engineers recommend that you back up your files immediately, preferably on an external memory carrier in order to be able to restore them. In order to protect yourself from Buma Stemra (For Windows Users) please follow these simple instructions:

For Windows 7 and earlier:

Substep 1

-Click on Windows Start Menu

Substep 2

-Type Backup And Restore
Substep 3-Open it and click on Set Up Backup

Substep 4

-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.

Substep 5

-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.

Substep 6:

-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by Buma Stemra.

For Windows 8, 8.1 and 10:

Substep 1

-Press Windows button + R

Substep 2

-In the window type ‘filehistory’ and press Enter

Substep 3

-A File History window will appear. Click on ‘Configure file history settings’

Substep 4

-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.

Substep 5

-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from Buma Stemra.

Enabling Windows File Protection:

Substep 1

– Press Windows button + R keys.

Substep 2

– A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.

Substep 3

– A System Properties windows should appear. In it choose System Protection.

Substep 4

– Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.

Substep 5

– Click on Ok and you should see an indication in Protection settings that the protection from Buma Stemra is on.

Restoring a file via Windows Defense feature:

Substep 1

Right-click on the encrypted file, then choose Properties.

Substep 2

-Click on the Previous Versions tab and then mark the last version of the file.

Substep 3

-Click on Apply and Ok and the file encrypted by Buma Stemra should be restored.


Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.

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.


with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy

Windows Mac OS X

How to Remove Buma Stemra from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Buma Stemra


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

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
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.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall Buma Stemra and related software 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.

2. In the field type in "appwiz.cpl" and press ENTER.

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"
Follow the instructions above and you will successfully uninstall most programs.

Step 3: Clean any registries, created by Buma Stemra 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 Buma Stemra there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.

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

3. You can remove the value of the virus by right-clicking on it and removing it.
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: Scan for Buma Stemra 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.


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


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.


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

Step 5 (Optional): Try to Restore Files Encrypted by Buma Stemra.

Ransomware infections and Buma Stemra 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 reccomended Data Recovery software by clicking on the link underneath:

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

Windows Mac OS X

Get rid of Buma Stemra from Mac OS X.

Step 1: Uninstall Buma Stemra and remove related files and objects

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to Buma Stemra:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Buma Stemra. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Buma Stemra. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Buma Stemra via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Buma Stemra. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Click the button below below to download SpyHunter for Mac and scan for Buma Stemra:


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by Buma Stemra.

Ransomware infections and Buma Stemra 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 reccomended Data Recovery software by clicking on the link underneath:

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

Buma Stemra FAQ

What is Buma Stemra ransomware and how does it work?

Buma Stemra 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 algorithm how 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.

How does Buma Stemra ransomware infect my computer?

Via several ways.Buma Stemra Ransomware infects computers by being sent via phishing e-mails, 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.

After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.

Another way, you may become a victim of Buma Stemra 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 .Buma Stemra files?

You can't. At this point the .Buma Stemra files are encrypted. You can only open them once they are decrypted.

Decryptor did not decrypt my data. What now?

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

One way to restore files, encrypted by Buma Stemra ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.

How Do I restore ".Buma Stemra" files (Other Methods)?

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

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

How do I get rid of Buma Stemra ransomware virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate Buma Stemra ransomware and then remove it without causing any additional harm to your important .Buma Stemra files.

Also, keep in mind that viruses like Buma Stemra ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.

What to Do If nothing works?

There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:

  • Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
  • Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
  • Also, check if some of the files that were encrypted it can be re-downloaded from the web.
  • Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
  • You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.

More tips you can find on our forums, where you can also asks any questions about your ransomware problem.

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