Satyr Ransomware

Also Known As: Satyr virus
Distribution: Low
Damage level: Medium

Satyr ransomware removal instructions

What is Satyr?

Recently discovered by Michael Gillespie, Satyr is a ransomware-type virus similar to Spartacus. Once infiltrated, Satyr encrypts most stored files using AES and RSA cryptographies. In addition, this malware appends filenames with the ".Satyr" extension (e.g., "sample.jpg" is renamed to "sample.jpg.Satyr"). Encrypted files become unusable. Satyr then opens a pop-up window and creates a text file ("READ ME.txt"), placing it on the desktop.

The pop-up and text file contain slightly different messages informing victims of the encryption and instructing them what to do next. While the text file encourages users to contact Satyr's developers, the pop-up simply states that victims must pay a ransom to restore data. As mentioned above, Satyr uses AES (symmetric) and RSA (asymmetric) encryption algorithms. These generate unique decryption keys individually for each victim. Therefore, two different keys are necessary to restore files. Developers hide all keys on a remote server, thus giving them an advantage: they can blackmail victims. To restore files, victims must pay a ransom of .018 Bitcoin (currently equivalent to ~$150). The cost is quite low as compared to other ransomware (ransoms typically fluctuate between $500 and $1500). Despite this, you should never pay. Cyber criminals are likely to ignore victims, after they submit payments. Therefore, paying typically gives no positive result and users are scammed. As well as losing their money, users will support cyber criminals' malicious businesses. For these reasons, never attempt to contact these people and certainly do not send any money. There are currently no tools capable of restoring files encrypted by Satyr free of charge (AES and RSA algorithms are extremely complex and, thus, cracking them is virtually impossible, especially when they overlay each other [data is encrypted twice]). Therefore, 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:

Satyr decrypt instructions

Satyr is virtually identical to XTBL, NMCRYPT, Ladon, RSA2048Pro, and dozens of other ransomware-type viruses. Note that although these viruses are developed by different cyber criminals, their behavior is virtually identical - all encrypt data and make ransom demands. In most cases these viruses have just two major differences: 1) cost of decryption, and; 2) type of encryption algorithm[s] used. Most ransomware employs algorithms that generate unique decryption keys. Therefore, file decryption manually without involvement of developers  (contacting these people is not recommended) is virtually impossible. The only possible scenarios are the ransomware not being fully developed or having certain bugs/flaws (keys are hard-coded, stored locally, etc.) Ransomware presents a strong case for maintaining regular data backups, however, keep them on a remote server (e.g., Cloud) or unplugged storage device (e.g., Flash drive, external hard drive, and so on), otherwise backups are encrypted as well.

How did ransomware infect my computer?

Developers use various methods to proliferate malware, however, the most popular are third party software download sources, peer-to-peer (P2P) networks, spam emails, fake software updaters, and trojans. Unofficial download sources (free file hosting websites, freeware download websites, etc.) and P2P networks (torrents, eMule, and so on) proliferate malware by presenting it as legitimate software. Users are tricked into downloading and installing malware. Spam emails contain malicious attachments (e.g., JavaScript files, MS Office documents, etc.) Once opened, these files stealthily download and install viruses. Fake updaters infect the system by exploiting bugs/flaws of old applications or simply downloading and installing malware rather than updates. Trojans are probably the simplest of all - they open "backdoors" for other high-risk viruses to infiltrate the system. In summary, the main reasons for computer infections are careless behavior and ignorance of these threats.

How to protect yourself from ransomware infections?

The key to computer safety is caution. Therefore, pay close attention when browsing the Internet. Download your applications from official sources only using direct download links, rather than third party downloaders/installers. These tools often include rogue applications, and thus should not be used. Furthermore, think twice before opening email attachments. If the files seem irrelevant or have been received from a suspicious email address, do not open them and delete the email immediately. We also strongly recommend that you keep installed software up-to-date and use a reputable anti-virus/anti-spyware suite. Bear in mind, however, that criminals proliferate malware using fake updaters. Therefore, you are advised to use implemented update functions or tools provided by the official developer only.

Text presented within Satyr ransomware pop-up:

Security tips
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us the Telegram: @tony_montana10928 and send personal ID KEY: -
For Decrypt Your Personal Files Send 0.018 BTC to this address: 19VDobG8akrbtM3VRJAGREJbKqxKB3WvM2

You have to pay for decryption in Bitcoins. The price depends on how you write to us. After payment we will send you the decryption tool that will decrypt all your files.

Screenshot of Satyr text file ("READ ME.txt"):

Satyr text file

Text presented within this file:

All your data has been locked us. You want to return? Write Telegram:

hxxps://t.me/tony_montana10928 or @tony_montana10928
Your personal ID KEY: -

Screenshot of files encrypted by Satyr (".Satyr" extension):

Files encrypted by Satyr

Satyr ransomware removal:

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 Satyr 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.


Download remover for Satyr virus
1) Download and install   2) Run system scan   3) Enjoy your clean computer!

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 Reimage.

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 Satyr 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 Satyr 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 Satyr 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 Satyr, 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 Satyr 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 Satyr ransomware: