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Remove Korean Ransomware and Restore .암호화됨 Encrypted Files

STF-korean-ransomware-screen-skull-picture

A new HiddenTear crypto-virus variant, named Korean ransomware, was discovered in the wild. Its ransom note is written in Korean, thus it is believed to be mainly targeting Korea, but it is not excluded for other users across the globe to become its victims. The Korean ransomware will encrypt your files and add the .암호화됨 extension to them. Read the article to the end to see how you can remove the ransomware and possibly decrypt your files.

Threat Summary

Name Korean Ransomware
Type Ransomware
Short Description The ransomware encrypts all your important files and displays a ransom message, giving out details about the ransom payment.
Symptoms The ransomware will encrypt files with the .암호화됨 extension and append them to every file.
Distribution Method Spam Emails, File Sharing Networks
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User Experience Join Our Forum to Discuss Korean Ransomware.
Data Recovery Tool Windows 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.

Korean Ransomware – Infection Spread

Korean ransomware could be utilizing targeted attacks for the infection of computers, and victims are probably mainly of Korean origin. Other methods for spreading the infection could exist, as well. It might also be spread in other ways, and it depends on what the cyber crooks do about it. There could be spam emails, which deliver letters with malicious attachments; some software or a website which is not updated having an exploit kit using that vulnerability as an entry point, etc. Even Social media networks or services for file-sharing could be used. Be extremely careful with your online actions and refrain from interacting with dubious emails, links, websites or files.

Korean Ransomware – Technical Details

Korean ransomware is based on the HiddenTear project. It is called that because its ransom note is in the Korean language and targets mainly users who speak that language. This does not exclude the possibility for other people to become victims of this crypto-virus. The malware researcher, Michael Gillespie discovered the ransomware a little over a day ago.

The ransomware might make the following entry in the Windows Registry:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

If that entry is indeed made, the ransomware will maintain persistence and launch with each start of the Windows Operating System.

After the Korean ransomware encrypts a user’s files it will create the file ReadMe.txt which is a ransom message, written in Korean. You can preview it here:

STF-korean-ransomware-ransom-message

The text inside it reads:

당신 의 파일 이 암호화 되었습니다. zMUTnnIOp / Ns & 3G [Password]

A rough English translation of that ransom message will look somewhat like this:

Your files have been encrypted. zMUTnnIOp / Ns & 3G [Password]

But that is not all – there is another file, which is the actual ransom note with instructions for paying the ransom. The file is a picture and is put on your desktop, so you see it. Here it is:

STF-korean-ransomware-ransom-note-instructions-screen

The text there is again in Korean and translates into English as the following:

Your files have been encrypted.
Download and install https://www.torproject.org/projects/torbrowser.html.en
and enter your ID-code.
[Website and code given] Follow the instructions on the site.

From the tweet of Michael Gillespie mentioned earlier, we find out that the website used for a decryption service is in actuality that of CrypMIC ransomware. You can see a picture of the website down here:

STF-korean-ransomware-decryption-service-site

The website has not stopped being active for more than two months, and the cyber criminals have probably amassed lots of money from their victims. The owners of the Korean ransomware could be affiliates or partners of the ones who created CrypMIC or virtually be the same people.

That is not important, because whatever the case is, you should not pay them. No guarantee is there that you will get your files decrypted, nor that the crooks will answer you. In the case that the owners of the two ransomware viruses are different, it might create a mess and a discrepancy between the encryption and decryption processes.

→.png, .xls, .xlsx, .doc, .docx, .ppt, .pptx, .psd, .svg, .bak, .db, .txt, .rar, .zip, .jpeg, .jpg, .pdf, .sql

STF-korean-ransomware-extension-encrypted-file

The above list is with file extensions which are still what people use on a daily basis for saving their important data, so it is probably those files that will 100% get encrypted. Files will get encrypted with the .암호화됨 extension, and in English that extension would translate exactly to “encrypted”. The Korean ransomware will lock the files using an AES 256-bit algorithm, as many other HiddenTear variants do.

Korean ransomware is not known if it deletes the Shadow Volume Copies from the Windows Operating System, but it is very likely to do that.

Remove Korean Ransomware and Restore .암호화됨 Encrypted Files

If your computer system got infected with the Korean ransomware, you should have some experience in malware removal. You should get rid of this ransomware as quickly as possible before it encrypts other files and spreads deeper in your used network. The recommended action for you to remove the ransomware effectively by following the step-by-step instructions manual provided down below.

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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.


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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 Korean Ransomware from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Korean Ransomware

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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 Korean Ransomware 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 Korean Ransomware 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 Korean Ransomware 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 Korean Ransomware 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 Korean Ransomware.

Ransomware infections and Korean Ransomware 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 Korean Ransomware from Mac OS X.


Step 1: Uninstall Korean Ransomware 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 Korean Ransomware:

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 Korean Ransomware. 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 Korean Ransomware. 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 Korean Ransomware 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 Korean Ransomware. 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 Korean Ransomware:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Korean Ransomware.

Ransomware infections and Korean Ransomware 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.


Korean Ransomware FAQ

What is Korean Ransomware ransomware and how does it work?

Korean Ransomware 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 Korean Ransomware ransomware infect my computer?

Via several ways.Korean Ransomware 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 Korean Ransomware 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 .Korean Ransomware files?

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

One way to restore files, encrypted by Korean Ransomware 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 ".Korean Ransomware" files (Other Methods)?

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

Also, keep in mind that viruses like Korean Ransomware 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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