THREAT REMOVAL

Wana Decrypt0r 2.0 – Decrypt Encrypted Files

Update Late May 2017! This article aims to show you a new method to detect the RSA encrypted files on your computer after which factorize and try decrypting encrypted files for free.

Malware researcher has reported the testing of a new method by which the private RSA key belonging to Wana Decrypt0r can be obtained. This method can be combined with another method which factorizes the private keys and gives access to AES-128 encrypted files by Wana Decrypt0r, WannaCry also known as WCry ransomware. This may result in the successful decryption of the files. The bad news in this situation is that the testing is done on an infected Windows XP computer and the results may vary. Nonetheless, these instructions may result in the successful recovery of your files.

How to Try and Decrypt .WNCRY .WCRY Files for Free

Security researcher Adrien Guinet(@adriengnt) has reported on Twitter that a current ongoing decryption process is on track for the encrypted files. So far, the researcher has successfully managed to obtain the private RSA encryption key and post instructions for it on github, which we have posted in

IMPORTANT: Bear in mind that before beggining to follow the instructions, you must still have the Wana Decrypt0r infection on your computer, because these instructions manipulate the wcry.exe process which generates the RSA private key.

But before beginning to explain the instructions to you, it is crucial that you understand how the encryption of Wana Decrypt0r 2.0 is conducted. To best explain it, we will use the graphic below, provided by Sheila A. Berta (@UnaPibaGeek):

As visible from the graphic below, multiple different keys are generated. These keys include the generating of a unique AES-128 random key, used for the decryption and encryption of the files. But this key which is appended on the encrypted files is also encrypted by another RSA Public key (see bottom right balloon). The trick with Rivest Shamir Adleman or RSA algorithm is that its core construction is based on the fact that it also generates an RSA-2048 private key. If you know the public and the private RSA keys, you will easily get to the AES-128 random key.

But there is a challenge, as Adrien Guinet mentiones in his Github decryption instructions for Wana Decrypt0r 2.0. There are two functions, named CryptDestroyKey and CryptReleaseContext which are connected with the wcry.exe process that do not delete the main numbers from the memory of your computer, like they are designed to do. But this does not mean that the method is not worth trying since if you are in luck and these memory strings are not deleted, you can recover the private key using the primary numbers if they are not deleted by those functions. This is where the tool of Adrien comes into play. Here is how to use it:

Step 1: Download the tools from GitHub, by clicking on the “clone or download” button in the following web link.

Step 2: Locate the “bin” folder and then open the binary program within it.

Step 3: You will need the PID (Process ID) of the active wcry.exe malicious process. To do this, use Kaspresky’s guide on how to get PID from a Windows process.

Step 4:
After you have successfully obtained the process ID of the malicious program, open Windows Command Prompt as an administrator and type the following command lines:

→CD {the location of the search_primes.exe executable file}

And then locate the file named 00000000.pky on your computer. An easier method to look for it is to type the following in Windows Search (for newer Windows versions):

After you have located the .pky file go back to command prompt and type the following command after going to it’s location with the >CD command:

→search_primes.exe
PID {C:\location folders\00000000.pky}

…where “location folders” are the actual path to the file if you still have it on your system.

If you have been successful in finding the prime RSA key after using this command, a file, named “priv.key” will be created in the same directory.

Decryption Instructions After You Have Located the Unique RSA Private Key

For the full decryption of your files, we reccomend you to follow the instructions on this article and use the wanakiwi software to decode the encrypted data.

After decrypting your files, simply remove the threat using an advanced anti-malware program:


Download

Malware Removal Tool

It is highly 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.

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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.


OFFER

REMOVE IT NOW (PC)
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 Wana Decyrpt0r 2.0 from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Wana Decyrpt0r 2.0

OFFER

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 Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 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.

IMPORTANT!
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 Wana Decyrpt0r 2.0 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.

SpyHunter5-update-2018


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

SpyHunter5-Free-Scan-2018


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.

SpyHunter-5-Free-Scan-Next-2018

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

Step 5 (Optional): Try to Restore Files Encrypted by Wana Decyrpt0r 2.0.

Ransomware infections and Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 from Mac OS X.


Step 1: Uninstall Wana Decyrpt0r 2.0 and remove related files and objects

OFFER
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 Wana Decyrpt0r 2.0:

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 Wana Decyrpt0r 2.0. 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 Wana Decyrpt0r 2.0. 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 Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0. 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
/Library/LaunchDaemons

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


Click the button below below to download SpyHunter for Mac and scan for Wana Decyrpt0r 2.0:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Wana Decyrpt0r 2.0.

Ransomware infections and Wana Decyrpt0r 2.0 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.


Wana Decyrpt0r 2.0 FAQ

What is Wana Decyrpt0r 2.0 ransomware and how does it work?

Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 ransomware infect my computer?

Via several ways.Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 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 .Wana Decyrpt0r 2.0 files?

You can't. At this point the .Wana Decyrpt0r 2.0 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 .Wana Decyrpt0r 2.0 files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Wana Decyrpt0r 2.0 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 ".Wana Decyrpt0r 2.0" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 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 Wana Decyrpt0r 2.0 ransomware and then remove it without causing any additional harm to your important .Wana Decyrpt0r 2.0 files.

Also, keep in mind that viruses like Wana Decyrpt0r 2.0 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.

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