KARMA Ransomware: What is Karma Decryptor Software?
Matthew Alvarez
Updated on April 18, 2026
Karma Ransomware
Karma adds its specific “.karma” extension to the name of every file. For example, your photo named as “my_photo.jpeg” will be transformed into “my_photo.jpeg.karma“, report in Excel tables named “report.xlsx” – to “report.xlsx.karma“, and so on.
Inside of the ransom note, there is usually an instruction saying about purchasing the decryption tool. This decryption tool is created by ransomware developers.
| Name | Karma Ransomware |
| Extension | .karma |
| Detection1 | Trojan.Azorult.a, Trojan.Win32.Shelma.wng, VHO:Trojan-Dropper.Win32.Scrop |
| Symptoms | Your files (photos, videos, documents) have a .karma extension and you can’t open it. |
| Fix Tool | GridinSoft Anti-MalwareSee If Your System Has Been Affected by Karma virus |
The information by the Karma ransomware states the following frustrating information:
KARMA Is the content of the files you looked for not readable? It is normal because the data in your files have been encrypted. Great!!! You have turned to be a part of a big community #karma Ransomware Continue reading because this is the only way out. !!! If you are reading this message it means the software !!! “karma Ransomware” has been removed from your computer. What is encryption? Encryption is a reversible modification of information for security reasons but providing full access to it for authorized users. To become an authorized user and keep the modification absolutely reversible (in other words to have a possibility to decrypt your files) you should have an individual private key. But not only it. It is required also to have special decryption software (in your case “karma Decryptor” software) for safe and complete decryption of all your files and data.
The image below gives a clear vision of how the files with “.karma” extension look like:
Example of encrypted .karma files
How did I get Karma ransomware on my computer?
Karma claims to be a legitimate application “Windows-TuneUp” that supposedly improves computer performance, provides various information, and so-called ‘useful features’ (memory management, registry cleaner, etc.) Therefore, users often believe that it is legitimate software. In fact, these claims are false. In the background, Windows-TuneUp stealthily encrypts stored data.
How to remove Karma virus?
To ensure the user that ransomware distributors really have the decryption tool, they may offer to decrypt several encrypted files. And they are the single owners of this decryption program: Karma ransomware is a completely new type, so there is no legit program from anti-malware vendors, which can decrypt your files. But such a situation is in momentum: decryption tools are updating every month.
However, paying the ransom is a bad decision, too. There is no guarantee that Karma ransomware developers will send you the decryption tool and a proper decryption key. And there are a lot of cases when ransomware distributors deceived their victims, sending the wrong key or even nothing. In the majority of cases, there is a way to recover your files for free. Search for available backups, and restore your system using it. Of course, there is a chance that the backup you found is too old, and does not contain a lot of files you need. But, at least you will be sure that there is no malware in your system. However, to ensure that there are no malicious programs in your system after the backup, you need to scan your PC with anti-malware software.
Karma ransomware is not unique. There are more ransomware of this type: C0v, Zeznzo, Vzlom. These examples of ransomware act in a similar way: encrypting your files, adding a specific extension, and leaving a great number of ransom money notes in every folder. But there are two things which make difference between these ransomware – cryptography algorithm, which is used for file encryption, and ransom amount . In some cases, victims are able to decrypt their files without any payments, just using free solutions produced by several anti-malware vendors, or even with the decryption tool which is offered by ransomware creators. The last scenario is possible when ransomware distributors have typed your decryption key inside of a ransom money note. However, as you can already guess, such luck is a very rare thing. Ransomware is created for money gaining, not for jokes or scaring.
There is no better way to recognize, remove and prevent ransomware than to use an anti-malware software from GridinSoft">3.
Download Removal Tool.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your computer for Karma infections and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.
Click on “Clean Now”.
When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
Frequently Asked Questions
How can I open “.karma” files?
No way. These files are encrypted by Karma ransomware. The contents of .karma files are not available until they are decrypted.
🤔 Karma files contain important information. How can I decrypt them urgently?
If your data remained in the .karma files are very valuable, then most likely you made a backup copy.
If not, then you can try to restore them through the system function – Restore Point. All other methods will require patience.
🤔 You have advised using GridinSoft Anti-Malware to remove Karma. Does this mean that the program will delete my encrypted files?
Of course not. Your encrypted files do not pose a threat to the computer. What happened has already happened.
You need GridinSoft Anti-Malware to remove active system infections. The virus that encrypted your files is most likely still active and periodically runs a test for the ability to encrypt even more files. Also, these viruses install keyloggers and backdoors for further malicious actions (for example, theft of passwords, credit cards) often.
🤔 Karma virus has blocked infected PC: I can’t get the activation code.
In this situation, you need to prepare the memory stick with a pre-installed Trojan Killer.
🤔 What can I do right now?
You can try to find a copy of an original file that was encrypted:
- Files you downloaded from the Internet that were encrypted and you can download again to get the original.
- Pictures that you shared with family and friends that they can just send back to you.
- Photos that you uploaded on social media or cloud services like Carbonite, OneDrive, iDrive, Google Drive, etc)
- Attachments in emails you sent or received and saved.
- Files on an older computer, flash drive, external drive, camera memory card, or iPhone where you transferred data to the infected computer.
Also, you can contact the following government fraud and scam sites to report this attack:
- In the United States: On Guard Online;
- In Canada: Canadian Anti-Fraud Centre;
- In the United Kingdom: Action Fraud;
- In Australia: SCAMwatch;
- In New Zealand: Consumer Affairs Scams;
- In France: Agence nationale de la sécurité des systèmes d’information;
- In Germany: Bundesamt für Sicherheit in der Informationstechnik;
- In Ireland: An Garda Síochána;
To report the attack, you can contact local executive boards. For instance, if you live in USA, you can have a talk with FBI Local field office, IC3 or Secret Service.
How сan I avoid ransomware attack?
You can easily protect yourself from its injection in several easy steps :
- Ignore all emails from unknown mailboxes with a strange unknown address, or with content that has likely no connection to something you are waiting for (can you win in a lottery without taking part in it?). If the email subject is likely something you are waiting for, check carefully all elements of the suspicious letter. A fake email will surely contain a mistake.
- Do not use cracked or untrusted programs. Trojans are often distributed as a part of cracked software, possibly under the guise of “patch” which prevents the license check. But untrusted programs are very hard to distinguish from trustworthy software, because trojans may also have the functionality you need. You can try to find information about this program on the anti-malware forums, but the best solution is not to use such programs.
- And to be sure about the safety of the files you downloaded, use GridinSoft Anti-Malware. This program will surely be a perfect shield for your personal computer.
References
- Encyclopedia of threats.
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products: