Coot Virus (.coot File Ransomware) - How to Remove + Restore Data

Coot Virus (.coot File Ransomware) – How to Remove + Restore Data

This is a Coot virus removal guide. The article is made to help you understand what is Coot Virus, what are Coot files and how you can remove this ransomware from your computer. Shortly said, you will learn how to remove Coot virus from your PC.

Coot Virus is the name of a ransomware infection that has recently started to hit computers. At the time of writing this, there are numerous registered infections around the world. The malware aims to get into your computer system, encrypt your files and then set the .coot file extension to appear at the end of their names. The files can no longer be opened and this is the main reason why victims are extorted to pay a ransom fee to open them again. The amount of this ransom is around $1000 USD and hackers require it to be paid anonymously via BitCoin.

Read this article to learn how to remove Coot virus and how to try and get your files to work again.

Threat Summary

NameCoot virus
TypeRansomware, Cryptovirus
Short DescriptionCoot Virus is a cryptovirus, that locks your files to extort you to pay ransom to get them to work once again.
SymptomsFiles are encrypted with an added .coot file extension. A ransom note, called _readme.txt is dropped.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by Coot virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Coot virus.
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.

Coot Virus – Update October 2019

The latest information about Coot virus ransomware indicates that the malware uses pirated software to infect computers. What happens is that victims could be downloading the following files which could lead to an infection:

  • Cracks.
  • Patches.
  • Torrents.
  • Keygens.
  • Software activators.
  • Pirated games or movies.

As of recent, the researcher Michael Gillespie (@demonslay335) has tweeted that the Coot virus is officially a variant v0175 from the STOP Ransomware virus family. The researcher has tweeted about the virus using the .coot extension and the _readme.txt note:

The tweet has sparked a lot of discussions with victims asking for solution. The sad news apparently are that this variant of STOP Ransomware may have online encryption keys. For those who are unfamiliar with this problem, STOP Ransomware variants use two types of keys for encrypting files via the AES 256 (Advanced Encryption Algorithm) cipher:

  • Offline keys.
  • Online keys.

The offline keys are easier to crack by researchers and the decryptors for the malware get updated to be able to decrypt specifically those offline keys. However, in the case of Coot ransomware and other viruses, most variants have online keys, that are significantly harder to decrypt, due to the fact that they cannot be detected and factorized as easy. We will keep track of the .coot virus situation and will have new updates and instructions in case this virus is effectively decrypted.

Coot Virus – How Did I Get It and What Does It Do?

Typical to other variants of STOP Ransomware, just like in the case of Coot Virus, the methods of infection do not differ much. These methods aim to trick you to trigger the Coot download process. The primary method being used for infection is spam e-mails that carry e-mail attachments. The attachments are in fact the virus infection file. These attachments carry around malicious macros and exploit kits that are programmed to bypass any relevant Windows and antivirus protection. Such files can pretend to be the following important documents in your inbox:

  • Invoices.
  • Receipts.
  • Order confirmations.
  • Letters from your bank.
  • Some important hospital data.
  • Ticket or hotel reservations.

Either way, when you download and run the virus, infection with Coot virus is inevitable. The virus begins to assume administrator rights and may perform the following activities on your computer:

  • Create mutexes.
  • Modify or create entries in the Windows registry entries.
  • Drop the ransom note _readme.txt and the virus files in the %AppData% or other system directories.
  • Check if its running on a real machine and if not, shuts down.

When the Coot Virus has done all its preparation processes, it is ready to start encrypting target files. It does this by scanning for your personal files, based on their type. These file types can turn out to be:

→ .JPG, .PNG, .BMP, .GIF, .PPTX, .DOC, .DOCX, .DOCM, .RAR, .ZIP, .7Z, .VM, .ISO, .AVI, .MP4, .3GP, .TIFF and other often used files.

The encryption process is very fast and your PC may slow down during these few seconds time. You will quickly notice that your files become no longer usable and get stripped out of their icons. Files, encrypted by Coot Virus begin to assume the following appearance:

For example, the file Document.txt will has the following name and look Document.txt.coot

.coot file remove restore sensorstechforum

The virus drops its _readme.txt ransom note, which contains the ransom demands of the cyber-crooks behind it:


Don’t worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that’s price for you is $490.
Please note that you’ll never restore your data without payment.
Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours.

To get this software you need write on our e-mail:

Reserve e-mail address to contact us:

Our Telegram account:

Your personal ID:

The main idea of the Coot virus is for you to pay and this is exactly why you shouldn’t and instead focus on removing this nasty malware from your computer.

Remove Coot Virus and Try to Restore Files

In order for you to get rid of Coot Virus from your PC, we strongly recommend that you follow the removal instructions underneath. They have been created with the primary idea to help you delete this ransomware step by step. For a full and effective removal, we recommend that you take advantage of the power of an advanced malware removal software. Such a tool is created to help you delete Coot Virus from your computer automatically by detecting and removing all of its virus files and objects in a matter of minutes time.

For the .coot file recovery, we strongly recommend that you back up the files and wait for a decryptor to become available for this particular variant of STOP Ransomware. When this decryptor is available, we will post an update here with instructions on how to decode your files. In the meantime, we strongly recommend that you try the alternative data recovery steps underneath. While they are not 100% effective in file recovery, they can help you restore at least some of the data.

Coot Virus Video Removal


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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Windows Mac OS X

How to Remove Coot virus from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Coot virus


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 Coot 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 Coot 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 Coot 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.

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 Coot 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.


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 Coot virus.

Ransomware infections and Coot 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:

If the above link does not work for you and your region, try the other two links below, that lead to the same product:


2. On the download page, click on the "Download" button:

3. Click on "Save File" button:

4. Accept all agreements and click "Next":

5. After all the "Next" steps, click on "Install" and then wait for the installation to complete:

6. Run the software. Click on the location to scan for missing or deleted files and click on "Scan":

7. Wait for the scan to complete, it may take some time. Be advised that this scan is not 100% guaranteed to recover all files, but it does have some chance to get your data back:

Windows Mac OS X

Get rid of Coot virus from Mac OS X.

Step 1: Uninstall Coot virus 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 Coot 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 Coot 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 Coot 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 Coot 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 Coot 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

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

Step 2: Scan for and remove Coot virus files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as Coot virus, 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 Coot virus on your Mac.

Ransomware for Mac Coot 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:

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