THREAT REMOVAL

.choda File Virus (Jigsaw) – Remove It and Restore Files

This article will help you to remove the .choda File Virus (Jigsaw ransomware) in full. Follow the ransomware removal instructions given at the end of the article.

The .choda File Virus is in actuality from the Jigsaw ransomware family of cryptoviruses. The cryptovirus uses the source code of the original malware. The .choda File virus has a list with around 126 file extensions that seeks to encrypt. All of the files which will get encrypted will receive the extension .choda appended to them. Afterward, a ransom note message will display in the Korean language.

Threat Summary

Name.choda File Virus
TypeRansomware, Cryptovirus
Short DescriptionThe ransomware will encrypt your files and display a screen with the ransom note, which might be themed around the movie “SAW” as the original ransomware is.
SymptomsThe ransomware will encrypt files by placing the .choda extension to all of them.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware

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User ExperienceJoin Our Forum to Discuss .choda File Virus.

.choda File Virus (Jigsaw) – Spread

Jigsaw ransomware could infect computers using different methods for spreading that infection. Spam e-mails could be spreading its payload dropper. Those types of emails will try to convince you that something important is attached as a file to that e-mail. In actuality, the attachment will look like a legitimate document or one that is archived, but it is a file containing a malicious script. If you open that file, it will launch the payload for the ransomware. You can preview the analysis of one such file on the VirusTotal service:

As you can see above, the payload file is called 초다 랜섬웨어.exe.

Jigsaw ransomware might be using other methods for spreading, like putting the payload file dropper via social media and file-sharing sites. Freeware applications which roam the Internet could be presented as useful but also could hide the malicious files of this virus. Refrain from opening files after you download them, especially if they come from unverified sources, such as links and e-mails. First, you should scan these files with a security tool, and also make sure to check their sizes and signatures for anything that seems unusual. You should read the ransomware preventing tips topic in the forum.

.choda File Virus (Jigsaw) – In Detail

The Jigsaw ransomware ransomware virus keeps on appearing on the radar of malware researchers. This variant displays a text in the Korean language and not themed around the Jigsaw character from the movie series “SAW” as its original Jigsaw Ransomware variant did.

When the Jigsaw virus is executed, it will modify an existing entry in the Windows Registry or create a new one to achieve persistence. That registry entry makes the malware to automatically execute with each boot of the Windows operating system. Afterward, your files will get encrypted, and receive the same extension.

Next, a window will pop-up on your screen that shows the Jigsaw character and text being typed out with green letters. That text is the ransom message with information and instructions for payment.

The text of the ransom note reads:

주확톤 당진희 침퓨터가 지짐각하계 존쟝되었줄끄띠토

당신의 소중한 파일몰온 조다 랜섬웨어에 의해 감염되었습니대
이체 지 지시어 따르신다댄 파일몰 되몰딛 수 았습니다.
파일플온 모두 암호밤되었으니 억세스 형 수 없습니다.

0| 랜섬웨어는 뽀드암호화 방식몰 사듬합니대

따라서 확장자딩몰 바꿔도 소음 없습니다.

돠장자딩옴 바꾸신다띤 지시어 따라도 그 파일믄 되몰림 수 없몰수드 있습니다.

이 장음 닫거나 겅퓨터즐 끄지 마샵시오.

만약 이 장음 닫거나 컴퓨터룰 끈다연′

재시작혔-몰따 파일몰 지우겠습니다.

이 프로그렴몰 제외한 다른 희사의 복호학 프로그렴몰 쓰지 마샵시으.

다른 옥호화 프로그렘몰 사응시, 파일몰 되돌릴 수 없습니다.

이체부터 할 일은 간단합니다.

그저 여기 아테에 있는 칸어 극호화 코드믈 넣으면 극호화가 진행됨니대
수고햐샵시오

The note roughly interpreted with machine translation in English says:

Dangjin of the State of the week, we will be in the summer John Jean!
Your precious files have been infected by the Mall of Jorda Ransomware
Now you can revert the distant files that follow my directives.
All of the files are encrypted and can not be accessed.

This ransomware is based on the Pode encryption method molar.

Therefore, there is no sense in changing the extension drive.

The file extension can not be reversed even if the directive is changed.

Do not close this long sound or turn off the computer, rules.

If this is closed or the computer is shut down, rule is “kite”

I’ll erase the files again.

Please do not use any other company’s extreme luxury pictures except this program.

While other other extreme glamorous prawns, the file can not be reversed.

From now on, things are simple.

Just enter in the space below here, the ultimate security code, and the dramatization will proceed.
Please do your best

The Jigsaw ransomware scares you that it will delete files from your PC every hour until you pay and there is nothing else that you can do to prevent that. But you should NOT under any circumstances pay the ransom as the note is lying to you – the virus is decryptable. Supporting cybercriminals is a bad idea as that will only motivate them to do more criminal acts.

.choda File Virus (Jigsaw) – Encryption

A decrypter tool might be made to decrypt files locked by this ransomware threat.

In case the cryptovirus follows the encryption process of the original ransomware, the list with 126 file extensions that will become encrypted will look like the following:

→.3dm, .3g2, .3gp, .7zip, .aaf, .accdb, .aep, .aepx, .aet, .ai, .aif, .as, .as.txt, .as3, .asf, .asp, .asx, .avi, .bmp, .c, .class, .cpp, .cs, .csv, .dat, .db, .dbf, .doc, .docb, .docm, .docx, .dot, .dotm, .dotx, .dwg, .dxf, .dxf.c, .efx, .eps, .fla, .flv, .gif, .h, .idml, .iff, .indb, .indd, .indl, .indt, .inx, .jar, .java, .jpeg, .jpg, .js, .m3u, .m3u8, .m4u, .max, .mdb, .mid, .mkv, .mov, .mp3, .mp4, .mpa, .mpeg, .mpg, .msg, .pdb, .pdf, .php, .plb, .pmd, .png, .pot, .potm, .potx, .ppam, .ppj, .pps, .ppsm, .ppsx, .ppt, .pptm, .pptx, .prel, .prproj, .ps, .psd, .py, .ra, .rar, .raw, .rb, .rtf, .sdf, .ses, .sldm, .sldx, .sql, .svg, .swf, .tif, .txt, .vcf, .vob, .wav, .wma, .wmv, .wpd, .wps, .xla, .xlam, .xll, .xlm, .xls, .xlsb, .xlsm, .xlsx, .xlt, .xltm, .xltx, .xlw, .xml, .xqx, .zip

The list with the file extensions for encryptions will be updated with if new information is found about it. The encrypted files will have the .choda extension appended to them, after their file name.

The Jigsaw ransomware could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

In case the command stated above is executed that would make the encryption process even more efficient as it will eliminate one of the possible ways for restoring your data. If your computer machine was infected with this ransomware and your files are locked, read on through to find out how you could potentially recover your data.

Remove Jigsaw Ransomware and Restore .choda Files

If your computer got infected with the Jigsaw ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.

Tsetso Mihailov

Tsetso Mihailov

Tsetso Mihailov is a tech-geek and loves everything that is tech-related, while observing the latest news surrounding technologies. He has worked in IT before, as a system administrator and a computer repair technician. Dealing with malware since his teens, he is determined to spread word about the latest threats revolving around computer 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 Spy Hunter
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 .choda File Virus from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .choda File Virus

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 .choda File Virus 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 .choda File Virus 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 .choda File Virus 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 .choda File Virus 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 .choda File Virus.

Ransomware infections and .choda File Virus 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 .choda File Virus from Mac OS X.


Step 1: Uninstall .choda File Virus 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 .choda File Virus:

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 .choda File Virus. 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 .choda File Virus. 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 .choda File Virus 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 .choda File Virus. 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.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


Step 3 (Optional): Try to Restore Files Encrypted by .choda File Virus on your Mac.

Ransomware for Mac .choda File Virus aims to encode all your files using an encryption algorithm which may be very difficult to decode, unless you pay money.

This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files, but only in some cases. 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 recommended Data Recovery Mac app by clicking on the link underneath:


.choda File Virus FAQ

What is .choda File Virus ransomware and how does it work?

.choda File Virus 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 .choda File Virus ransomware infect my computer?

Via several ways..choda File Virus 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 .choda File Virus 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 ..choda File Virus files?

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

One way to restore files, encrypted by .choda File Virus 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 "..choda File Virus" files (Other Methods)?

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

Also, keep in mind that viruses like .choda File Virus 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.

1 Comment

  1. AvatarRafael

    Hi guys,
    Someone have success to decrypt .stun files?

    Reply

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