Get a fast solution to remove Kool Ransomware and get technical assistance with decryption of .kool files. Download an effective removal tool and perform a full scan of your PC.
What is Kool Ransomware
Kool Ransomware is a type of malicious software that belongs to the broader category of ransomware. It is designed to infiltrate a user’s computer, encrypt files, and demand a ransom for the decryption key. Kool Ransomware is part of the STOP/Djvu ransomware family, which is known for targeting Windows users and encrypting files with various extensions. Once Kool Ransomware has infected a computer, it encrypts files and appends a specific file extension to the encrypted files, which is .kool in this case. The encryption used by Kool Ransomware is generally a symmetric or asymmetric algorithm that makes files inaccessible without the unique decryption key. After encrypting the files, Kool Ransomware generates a ransom note, typically named _readme.txt or similar, and places it in folders containing the encrypted files. This note contains instructions for the victim on how to pay the ransom and often includes a deadline and warnings about the consequences of failing to comply. In this article we show how to remove Kool Ransomware and decrypt .kool files for free in Windows 11, 10, 8, 7.
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Victims of Kool Ransomware seek decryption tools to recover their files without paying the ransom. One such tool is the Emsisoft STOP Djvu Decryptor, which can sometimes decrypt files encrypted by STOP/Djvu ransomware variants under certain conditions, such as when the encryption was done using an offline key that the decryptor has. To attempt decryption of “.kool” files, victims can use the Emsisoft STOP Djvu Decryptor. However, the success of decryption depends on whether the ransomware used an offline key that is known to the decryptor. If the ransomware used a unique online key, decryption might not be possible without the specific key held by the attackers. In cases where decryption is not feasible, victims are advised to keep encrypted files stored in the hope that a future decryption solution becomes available. It is also recommended to maintain regular backups of important files to prevent data loss from ransomware attacks.
Another option to recover some of the data is using Stellar Data Recovery Professional, that can restore (not decrypt) some copies of encrypted files removed earlier.
How Kool Ransomware infects computers
Kool Ransomware typically spreads through several common infection methods. These include phishing emails with malicious attachments, drive-by downloads from compromised websites, the use of exploit kits that target software vulnerabilities, and the downloading of pirated software or files from untrustworthy sources.
- Download Kool Ransomware Removal Tool
- Get decryption tool for .kool files
- Recover encrypted files with Stellar Data Recovery Professional
- Restore encrypted files with Windows Previous Versions
- Restore files with Shadow Explorer
- Restore media files with Media Repair
- How to protect from threats like Kool Ransomware
Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Kool Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.
It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Kool Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. The virus assigns a certain ID to the victims, which is used to name those files and supposedly to send a decryption key. Great tools to protect against Kool Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.
Download Kool Ransomware Removal Tool
To remove Kool Ransomware completely, we recommend you to use SpyHunter 5. It detects and removes all files, folders, and registry keys of Kool Ransomware . The trial version of Spyhunter 5 offers virus scan and 1-time removal for FREE.
Alternative Removal Tool
To remove Kool Ransomware completely, we recommend you to use Norton Antivirus from Symantec. It detects and removes all files, folders, and registry keys of Kool Ransomware and prevents future infections by similar viruses.
How to remove Kool Ransomware manually
Kill Kool Ransomware Process
- Press Ctrl + Shift + Esc keys simultaneously to open the Windows Task Manager.
- Select the Processes tab and look for any suspicious processes related to Kool Ransomware .
- Right-click on the malicious process and select Open file location. This step is necessary to remove executable file after this.
- Right-click on the malicious process and select End Task or End Process option.
Disable Kool Ransomware Start-up Entry
- Press Win + R keys together to open the Run dialog box.
- Type
msconfig
and press Enter to open the System Configuration window. - Go to the Startup tab and look for any suspicious entries related to Kool Ransomware .
- Uncheck the box next to the malicious entry and click OK to disable it.
Delete Kool Ransomware Task
- Press Win + R keys together to open the Run dialog box.
- Type
taskschd.msc
and press Enter to open the Task Scheduler. - Look for any tasks related to Kool Ransomware in the Task Scheduler Library.
- Right-click on the malicious task and select Delete or Disable option.
Remove Kool Ransomware Executable Files
- Open folder that was opened on the third step of the first instruction Kill Kool Ransomware Process.
- Find Kool Ransomware executable file.
- Right-click on the malicious executable file and select Delete to remove it.
- To be able to do this you will need to modify permissions fo this file in the instruction below.
Disable inheritance for executable files
- Right-click on the affected folder and click Properties.
- Click the Security tab and then click the Advanced button.
- In the Advanced Security Settings window, click the Disable inheritance button.
- Choose Convert inherited permissions into explicit permissions on this object to remove inherited permissions.
- Now you will be able to delete the file.
It is not recommended to remove Kool Ransomware manually, for safer solution use Removal Tools instead.
Kool Ransomware files:
_readme.txt
rdpclip.exe
delself.bat
{randomname}.exe
Kool Ransomware registry keys:
no information
How to decrypt and restore .kool files
Use automated decryptors
Download STOP Djvu Decryptor from EmsiSoft (.kool variations)
IMPORTANT: Read this detailed guide on using STOP Djvu Decryptor to avoid file corruption and time wasting.
STOP Djvu Decryptor is able to decrypt .kool files, encrypted by Kool Ransomware . This tool was developed by EmsiSoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:
Dr.Web Rescue Pack
Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .kool files by uploading samples to Dr. Web Ransomware Decryption Service. Analysis of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.
If you are infected with Kool Ransomware and removed it from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:
Use Stellar Data Recovery Professional to restore .kool files
- Download Stellar Data Recovery Professional.
- Click Recover Data button.
- Select type of files you want to restore and click Next button.
- Choose location where you would like to restore files from and click Scan button.
- Preview found files, choose ones you will restore and click Recover.
Using Windows Previous Versions option:
- Right-click on infected file and choose Properties.
- Select Previous Versions tab.
- Choose particular version of the file and click Copy.
- To restore the selected file and replace the existing one, click on the Restore button.
- In case there is no items in the list choose alternative method.
Using Shadow Explorer:
- Download Shadow Explorer program.
- Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
- Select the drive and date that you want to restore from.
- Right-click on a folder name and select Export.
- In case there are no other dates in the list, choose alternative method.
If you are using Dropbox:
- Login to the DropBox website and go to the folder that contains encrypted files.
- Right-click on the encrypted file and select Previous Versions.
- Select the version of the file you wish to restore and click on the Restore button.
Use Media Repair to decrypt media files encrypted with .kool
- Download Media Repair tool.
- Right-click on the downloaded archive, and select Extract to Media_Repair\.
- Then double-click on the extracted .exe file to launch the utility.
- At first, you have to choose which file type you want to decrypt. You can do it from the drop-down menu in the utility.
- Next, browser the folder with encrypted or reference files. Choose any of them and click on the Test icon located in the top right corner.
- Media Repair will display a pop-up message with information on whether it can repair the selected file or not.
- After checking if it is possible or not, select your reference file and click on the icon right under the Test button we used in step #5.
- If the file pair is properly matched, you can move on and hit the Play button to start repairing. You can also stop the process anytime by clicking on the Stop button.
How to protect computer from viruses, like Kool Ransomware , in future
1. Get special anti-ransomware software
Use G-DATA STOP/Djvu vaccine
G DATA has released a vaccine to block STOP/DJVU ransomware from encrypting victims’ files after infection. The vaccine prevents the ransomware from encrypting files anymore, but it does not prevent the infection itself. The vaccine is available on GitHub. Download it below:
Use ZoneAlarm Anti-Ransomware
Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.
2. Back up your files
As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. Kool Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.
3. Do not open spam e-mails and protect your mailbox
Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.