Home > Ransomware > Remove Satana Ransomware and Restore Gricakova Encrypted Files

Remove Satana Ransomware and Restore Gricakova Encrypted Files


A file encryption virus believed to be originating from Bosnia, named Satana is reported to use a mixture of strong AES plus RSA encryption ciphers to encode files of unsuspecting victims appending the Gricakova extension. The virus demands the approximate sum of 0.5 BTC from its victims and gives seven days deadline. Despite the strong encryption security experts always advise against making the payoff to cyber-criminals, for obvious reasons. Instead, it is recommended to swiftly remove this virus by downloading an advanced anti-malware software and try alternative solutions similar to the ones in this article to restore some of your files.

Threat Summary

Name Satana (Gricakova Files)
Type Ransomware virus/ Screen locker
Short Description Satana encriphers data with the RSA algorithm and AES cipher and asks a 0.5 BTC payoff for restoring access to the encoded files..
Symptoms All of the data is encroded and becomes inaccessible. A ransom note with instructions for paying the ransom shows as a !satana!.txt file, boot screen and window pop-up.
Distribution Method Spam Emails, Email Attachments, File Sharing Networks.
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join our forum to Discuss Satana 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.

Satana Ransomware (Gricakova Files) Distribution Strategy

To spread effectively and infect successfully Satana ransomware virus may use a range of tools and techniques to bypass security and fool the user into opening its malicious files. For instance, the user may get infected by opening a spam e-mail message attachment which resembles something of importance such as a confirmation letter from a bank the user may be registered in, for example. The attachment may have malicious JavaScript, Payload Loader or in some cases it may open a URL which will redirect to a malicious web link which could infect the user via an Exploit Kit. For successful infection, Satana ransomware may utilize so-called program obfuscators which aim to conceal the malicious executables from antivirus software with real-time shields. However some anti-malware programs detect such obfuscators by monitoring the activity files and whether or not a payload is dropped.

Satana Ransomware (Gricakova Files) – More Information

After it has been activated and has infected a computer system, Satana will remain hidden while encrypting important files of infected users with the Gricakova extension. Its encryption module is programmed to encipher a wide variety of file extensions, which are:

  • Adobe Reader PDF files.
  • Microsoft Office documents.
  • Different Video files.
  • Different types of audio files.
  • Various types of files associated with databases and different programs like Photoshop, Movie Maker, etc.

The scary part is what Satana uses to encrypt the files by adding the Gricakova extension to them. It uses a two-key encryption, which can be illustrated in detail if you read the following article:

Ransomware Encryption Behind Gricakova Files Explained – Why Is It So Effective?

Explained in brief, the encryption which has been used by Satana to add the Gricakova extension to files, includes two of the most powerful ciphers:

  • RSA.
  • AES.

One of the algorithms, AES, may be used to encrypt the files themselves and generate a decryption key which itself may be additionally encrypted with RSA cipher and sent out to the cyber-criminals’ server which controls the whole operation.

After encryption, Satata ransomware changes the name of the files from their start, instead of adding a file extension. The name remains in an original variant, but its beginning appears with the contact e-mail address of the cyber-criminals, for example:

  • Gricakova@techemail.com_New Text Document.txt

Judging by the origin of the word Gricakova, it is believed that this Ransomware virus might be originating from Bosnia.

Also, Satana(Devil) ransomware uses extreme measures to notify the victims that they are in a tough spot – it displays a message on startup, displays a pop-up and drops a !satana!.txt file so that the user can see it. All of the screens and the text file contain the very same ransom note, reported by infected users to be the following:

→ “You had bad luck. There was crypting of all your files in a FS bootkit virus

To decrypt you need send on this E-mail: banetnatia@mail.com your private code: {unique identification of the victim here} and pay on a Bitcoin Wallet: XjU81vkJn4kExpBE2r92tcA3zXVdbfux6T total 0,5 btc After that during 1 – 2 days the software will be sent to you – decryptor – and the necessary instructions. All changes in hardware configurations of your computer can make the decryption of your files absolutely impossible! Decryption of your files is possible only on your PC! Recovery is possible during 7 days, after which the program – decryptor – can not ask for the necessary signature from a public certificate server. Please contact via e-mail, which you can find as yet in the form of a text document in a folder with encrypted files, as well as in the name of all encrypted files.If you do not appreciate your files we recommend you format all your disks and reinstall the system. Read carefully this warning as it is no longer able to see at startup of the computer. We remind once again- it is all serious! Do not touch the configuration of your computer!
E-mail: banetnatia@mail.com – this is our mail
CODE: {unique identification code of the victim here} this is code; you must send
BTC: XjU81vkJn4kExpBE2r92tcA3zXVdbfux6T here need to pay 0,5 bitcoins
How to pay on the Bitcoin wallet you can easily find on the Internet. Enter your unlock code, obtained by E-mail here and press “ENTER” to
continue the normal download on your computer. Good luck! May God help you!

Here is how the message looks when a pop-up is displayed and on system boot as well as in the text document:


Permanently Remove Satana Ransomware and Try To Restore The Files

To eradicate Satana Ransomware virus in full from your computer, we advise you to take a look and follow the Manual or Automatic removal instructions after this article. They are created with a clear purpose – to effectively contribute to the removal of Satana. However, since this ransomware virus creates multiple files on your computer as well as modifies heavily the Windows Registry Editor, it may be difficult to delete all of the objects manually. This is why in case you want to be sure the virus is removed, experts recommend using a particular anti-malware program which will not only find and delete all files associated with Satana Ransomware but protect your computer from ransomware in the future as well.

To attempt getting back your files, we urge you to try restoring them with the alternative solutions we have provided in step “3. Restore files encrypted by Satana Ransomware” after this article. They are no guarantee you will get your files back, but if you are lucky you may restore some of your files, at least until a working decryptor is created for this virus. As soon as researchers release such decryptor, we will make sure to notify you by updating this article, so we suggest that you bookmark it and check it often.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and 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.


with Anti-Malware
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 Satana (Gricakova Files) from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Satana (Gricakova Files)


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 Satana (Gricakova Files) 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 Satana (Gricakova Files) 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 Satana (Gricakova Files) 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 Satana (Gricakova Files) 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 Satana (Gricakova Files).

Ransomware infections and Satana (Gricakova Files) 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 Satana (Gricakova Files) from Mac OS X.

Step 1: Uninstall Satana (Gricakova Files) 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 Satana (Gricakova Files):

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 Satana (Gricakova Files). 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 Satana (Gricakova Files). 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 Satana (Gricakova Files) 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 Satana (Gricakova Files). 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.

Click the button below below to download SpyHunter for Mac and scan for Satana (Gricakova Files):


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by Satana (Gricakova Files).

Ransomware infections and Satana (Gricakova Files) 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.

Satana (Gricakova Files) FAQ

What is Satana (Gricakova Files) ransomware and how does it work?

Satana (Gricakova Files) 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 Satana (Gricakova Files) ransomware infect my computer?

Via several ways.Satana (Gricakova Files) 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 Satana (Gricakova Files) 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 .Satana (Gricakova Files) files?

You can't. At this point the .Satana (Gricakova Files) 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 .Satana (Gricakova Files) files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Satana (Gricakova Files) 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 ".Satana (Gricakova Files)" files (Other Methods)?

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

Also, keep in mind that viruses like Satana (Gricakova Files) 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.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

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