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Decrypt Files Encrypted by DMA Locker 3.0 Ransomware

dmalocker3-decryption-how-to-sensorstechforum-mainA very experienced malware researcher, going by the nickname hasherezade (@hasherezade) has released decryption instructions for the victims of DMA Locker ransomware. The 3rd variant of this ransomware virus has been first detected back in May, and when it was released, it had even stronger encryption than it’s predecessors. The virus demands 4 BTC in ransom payment after it encrypts the files of the infected computer, denying all access to them by the user.

DMA Locker 3.0 Ransomware – Quick Background

The previous versions of the DMA Locker virus had multiple flaws which made the enciphered files easily decryptable. This pushed the malware writers behind it to develop a more sophisticated version of the virus, named DMA Locker 3.0.

This ransomware is particularly interesting primarily because it ais primarily to check for several key Windows processes such as ShadowExplorer.exe, sesvc.exe, cbengine.exe and rstrui.exe all connected with Windows backups.

After it has infected a given system, the DMA Locker virus causes a direct blue screen of death and after the computer is restarted the virus displays a system error and automatically runs It’s malicious executable which encrypts the files and displays it’s distinctive ransom note:


Fortunately, now there is a decryption possibility for some DMALOCKS. So if your DMALOCK is not one of the ones below, you should wait for an update in this article, because at this point only three series of DMA Locker 3.0 are supported. Here are the supported DMALOCKS for which these instructions should work:

DMALOCK 38:34:69:41:46:73:32:55
DMALOCK 51:34:11:63:80:61:23:19
DMALOCK 40:12:16:43:65:40:70:17

DMALocker 3.0 Decryption Instructions

Before we begin the decryption process, it is strongly recommended to follow these instructions.

1. Make more than one backup of the encrypted files.
2. Create a recovery dump of Windows just in case it crashes so you can restore it easily.
3. Do not insert any flash drives with important information on the infected computer since they may get encrypted as well.
4. Realize that you are doing this at your risk!

After these are kept, we can continue with the decryption instructions. To decrypt the files for a particular DMA Locker key, it is important to know what you will be doing, first. The brave malware researcher who reported these variants are decryptable, @hasherezade has come up with a modified variant of DMA Locker which also causes an infection on your computer so be prepared because your PC may restart and have a BSOD as a result of executing these files. This is why we are not responsible if you haven’t followed our instructions in the red box above.

Here is how to decrypt files encrypted by the above-mentioned DMALOCKS:

Step 1: Click on the following web link and download the DMALOCKS.zip file corresponding to your infection by clicking on the download icon which will appear on the top left corner when you hover with your mouse above it:


Save the file somewhere where you can easily find it and open it. For you to open it, you will need a program such as WinRar which can be found for free online at rarlab.com.

Step 2: Extract the archive in the %Program Data% folder. You can find the folder in different locations, depending on your Windows version:


→C:\Program Data
C:\Users\All Users (The new program data has the name “All Users”)

You should extract the DMALOCKS folder into this folder, just as described in the picture below:


It will ask for a password upon extraction. The password is “infected”.


Step 3: After this has been performed, you should run the svchosd.exe file as an administrator by right-clicking it:


Step 4: Then, bear in mind that after the executable runs, your computer may cause a BSOD and restart after which display an error message and the files will be encrypted. Nevertheless, it will also display the DMA Locker’s so-called “user interface” screen. There you should see an “Open” button. Simply press it and navigate yourself to the DMALOCKS folder to open the dma_private.key button.


After you have done this click on the “UNLOCK” button under the “OPEN” button and the decryptor will automatically begin to decrypt your files, as shown from the photo below:


The malware researcher also advises affected users to perform the same activity on each enciphered machine if the machines are a part of a workstation group.

DMA Locker 3.0 Decryption – Summary

Those who were able to get their files decrypted by these variants of DMA Locker are in luck because there are much more out there who cannot decrypt their data. Still, we at SensorsTechForum will keep track on latest developments involving DMA Locker and decryption possibilities. In the meantime, recommendations are to follow several simple tips to keep yourself protected in the future and avoid ransomware devastators such as DMA Locker 3.0.

1. Follow these general protection tips.
2. Download an advanced malware protection program.


Malware Removal Tool

Spy Hunter scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the anti-malware tool.Find Out More About SpyHunter Anti-Malware Tool / How to Uninstall SpyHunter

3. Download a relevant ransomware protection program.
4. Download a relevant cloud backup program that backups copies of your files on a secure server and even if your computer is affected you will stay protected.

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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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 DMA Locker 3.0 from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove DMA Locker 3.0


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 DMA Locker 3.0 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 DMA Locker 3.0 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 DMA Locker 3.0 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 DMA Locker 3.0 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 DMA Locker 3.0.

Ransomware infections and DMA Locker 3.0 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 DMA Locker 3.0 from Mac OS X.

Step 1: Uninstall DMA Locker 3.0 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 DMA Locker 3.0:

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 DMA Locker 3.0. 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 DMA Locker 3.0. 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 DMA Locker 3.0 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 DMA Locker 3.0. 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 DMA Locker 3.0:


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by DMA Locker 3.0.

Ransomware infections and DMA Locker 3.0 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.

DMA Locker 3.0 FAQ

What is DMA Locker 3.0 ransomware and how does it work?

DMA Locker 3.0 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 DMA Locker 3.0 ransomware infect my computer?

Via several ways.DMA Locker 3.0 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 DMA Locker 3.0 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 .DMA Locker 3.0 files?

You can't. At this point the .DMA Locker 3.0 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 .DMA Locker 3.0 files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by DMA Locker 3.0 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 ".DMA Locker 3.0" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .DMA Locker 3.0 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 DMA Locker 3.0 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 DMA Locker 3.0 ransomware and then remove it without causing any additional harm to your important .DMA Locker 3.0 files.

Also, keep in mind that viruses like DMA Locker 3.0 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.

How to 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:

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

  1. Christopher Klopstra

    I have another variant, DMALOCK 70:66:83:50:68:23:73:25. I have all 3 versions you have on a test file but they don’t work. What can I do to help so we can get this 70:x version unlocked as well?

  2. vali


  3. vali

    I am effected with “DMALOCK 26:83:45:78:78:69:70:76” please help us in decrypting
    my mail ID:

  4. Vencislav Krustev

    To all who have been infected with DMA Locker. Bear in mind that these instructions are only for those 3 DMA locks. If you want to look for decryptors for your DMA Locks, make sure to follow malware researchers involved witht his virus, such as @hasherezade on Twitter, for example. Furthermore, you can also try alternative tools tor restore your files, like using data recovery software, for example.

    Best Regards,

  5. shiv choudhary

    i am infexted with “DMALOCK 31:74:71:30:36:43:72:21” please help us in decrypting the data My mail ID is

  6. Jeff Pearson

    Has anyone been able to create a decryption tool for 84:67:64:49:24:65:74:78 email is jispidey@hotmail.com. Looks like they placed the encryption code in the cryptinfo.txt file of: 17c41iFaMBrUPyZZvexainuVuZi3cM15vj Thanks

  7. Will Wilson

    I am thinking it consistently changes, maybe based on systems we are connecting to… I just got hit at an office I work for with key 47:81:81:27:58:15:19:84
    We had maybe 60% of our stuff backed up, which isn’t good numbers considering some of the items missing.

    Any help with these?

  8. Wayne Petrea

    Has any thing changed since this article was written about DMA Locker 3.0/4.0 concerning decryption?


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