Saturn Ransomware

Also Known As: Saturn virus
Distribution: Low
Damage level: Severe

Saturn ransomware removal instructions

What is Saturn?

First discovered by MalwareHunterTeam, Saturn is a ransomware-type virus that, once infiltrated, encrypts stored data and makes ransom demands. During encryption, Saturn appends filenames with the ".saturn" extension (e.g., "sample.jpg" is renamed to "sample.jpg.saturn"). From this point, files become unusable. Following successful encryption, Saturn creates five files ("#DECRYPT_MY_FILES#.vbs", "#DECRYPT_MY_FILES.BMP" [also set as desktop wallpaper], "#DECRYPT_MY_FILES#.txt", "#DECRYPT_MY_FILES#.html", and "#KEY-dea23dbdbbfeba538e0c3aac3751331d.KEY"), placing them on the desktop. The BMP, TXT, and HTML files contain ransom-demand messages.

Note that Saturn is provided as a RaaS - 'Ransomware as a Service'. In addition, this malware is free for aspiring cyber criminal to download on its website within the dark web. Typically, RaaS providers demand a certain fee in advance. Saturn's developers state that distributors (aspiring cyber criminals) must proliferate the malware and they will then receive 70% of submitted payments in return. The rest (30%) goes to Saturn's developers. This revenue-generating model is very convenient for the developers, since they put minimal effort into distribution - the third parties do everything for them. The developers simply share payments received.

The new files contain messages informing victims of the encryption and encouraging them to pay a ransom in exchange for decryption of the files. Although it is currently unknown whether Saturn uses symmetric or asymmetric cryptography, decryption requires a key generated uniquely for each victim. These keys are stored on a remote server controlled by Saturn's developers and victims are encouraged to pay a ransom for their release. The cost of decryption is $300 in Bitcoins, however, payment must be submitted within seven days, otherwise the cost will double. After one month, files are corrupted permanently. Despite the threats and demands, we strongly advise you to ignore all requests to submit payments. Research shows that cyber criminals often ignore victims, once ransoms are paid. In other words, paying gives no positive result and you will be scammed. We strongly advise you not to contact these people or pay ransoms. Unfortunately, there are no tools capable of restoring files compromised by Saturn free of charge. The only solution is to restore everything from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Saturn decrypt instructions

Although Saturn is provided as a RaaS, it shares many similarities with dozens of other regular ransomware-type viruses such as, for example, Wana Decrypt0r, Tornado, David, and TBlocker. Although these viruses are developed by different cyber criminals, all have identical behavior - they encrypt stored data and make ransom demands. They often have just two major differences: 1) size of ransom, and; 2) type of cryptography used. Research shows that, unfortunately, most of these viruses employ algorithms (e.g., RSA, AES, etc.) that generate unique decryption keys. Therefore, file decryption manually without involvement of developers (contacting these people is not recommended) is mostly impossible. The only scenario allowing decryption of files is if the ransomware is not fully developed or has certain bugs/flaws (for example, the key is hard-coded, stored locally or similar). Ransomware presents a strong case for maintaining regular data backups, however, backup files must be stored on a remote server (e.g., Cloud) or unplugged external storage. If not, the backups are encrypted as well.

How did ransomware infect my computer?

Ransomware-type viruses are proliferated in various ways, however, the most popular are spam emails, third party software download sources, fake software update tools, and trojans. Spam emails often contain malicious attachments (e.g., MS Office documents, JavaScript files, etc.) that, once opened, stealthily download and install the virus. Unofficial download sources (P2P [peer-to-peer] networks, free file hosting websites, freeware download websites) proliferate malware by presenting it as legitimate software. Users are tricked into downloading and installing malware. Fake software updaters infect the system by exploiting outdated software bugs/flaws or installing malware rather than updates. Trojans are the simplest ones - in most cases, they open "backdoors" for malware to infiltrate the system.

Threat Summary:
NameSaturn virus
Threat TypeRansomware, Crypto Virus, Files locker
SymptomsCan't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methodsInfected email attachments (macros), torrent websites, malicious ads.
DamageAll files are encrypted and cannot be opened without paying a ransom. Additional password stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate Saturn virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

The main reasons for computer infections are poor knowledge and careless behavior. The key to safety is caution. Therefore, be very careful when browsing the Internet. Never open files received from suspicious email addresses - delete these emails immediately, without reading. Download your applications from legitimate sources only, using direct download links. Third party downloaders/installers should never be used, since they are often used to proliferate rogue apps. Keep installed software up-to-date and use a legitimate anti-virus/anti-spyware suite. Remember that criminals proliferate malware via fake updaters. Therefore, apps should be updated using implemented features or tools provided by the official developer.

Screenshot of Saturn HTML file:

Saturn html file

Text presented in Saturn ransomware txt ("#DECRYPT_MY_FILES#.txt") and html ("#DECRYPT_MY_FILES#.html") files:


All of your files have been encrypted!
To Decrypt your files follow these steps:

1. Download and install the "Tor Browser" from

2. Run it.

3. In the Tor Browser, open website:

4. Follow the instructions on the page

Screenshot of Saturn desktop wallpaper:

Saturn wallpaper

Screenshot of Saturn website (homepage):

Saturn website

Text presented in this page:

Saturn Decryptor
All your documents, photos, databases and other important files have been encrypted!

To restore your files you have to buy a special software called 'Saturn Decryptor''

If you pay within 7 days the price will be 300$ (0.02782545 BTC)

After 7 days the price will rise to 600$ (0.0556509 BTC)

Your files will be recoverable for a month, after that your files are forever gone.
Special price will end in 6 days, 23 hours, 59 minutes, 56 seconds
How to buy Saturn Decryptor

The only payment method we accept is Bitcoin, there are many methods to get them.
1. You have to create a Bitcoin(BTC) wallet.
We recommend the most popular wallet or
2. You have to buy some Bitcoins to your wallet.

Buy more than 0.02782545 bitcoins

We recommend the following trusted sites to buy bitcoin from (not related to this site in any way)
3. Send 0.02782545 bitcoins to the Bitcoin address below:
4. Wait for the payment to get confirmed.
Refresh the page to see up to date payment status.
5. Once the payment is confirmed you can download 'Saturn Decryptor'.
You will be then automaticly redirected to the download page.

Amount Status
No payment found
Total confirmed 0 BTC

We have received 0 out of 0.02782545 bitcoins from you

Screenshot of Saturn website (FAQ):

Saturn website FAQ

Text presented in this page:

Saturn Decryptor
Frequently asked questions
Q:What happened to my files?
A:Your files got encrypted by Saturn ransomware.

Screenshot of files encrypted by Saturn (".saturn" extension):

Files encrypted by Saturn

Saturn ransomware removal:

Instant automatic removal of Saturn virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Saturn virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Saturn virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Saturn ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Saturn ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Saturn are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by Saturn, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Saturn ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove Saturn ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Malware activity

Global virus and spyware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Saturn virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Saturn virus on your mobile device.
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Platform: Windows

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