Mira Ransomware

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

Mira ransomware removal instructions

What is Mira?

Mira is another ransomware-type virus discovered by Cyber Security (GrujaRS). After successful infiltration, Mira encrypts most stored data and adds the ".mira" appendix to each filename. For instance, "sample.jpg" is renamed to "sample.jpg.mira". Encrypted data immediately becomes unusable. Mira also generates a text file ("!!!READ_IT!!!.txt") and places a copy in every existing folder.

The new text file generally contains a short message informing victims of the situation and demanding payment in exchange for data recovery. No additional information is provided and, thus, it is currently unknown whether Mira uses symmetric or asymmetric cryptography. In any case, the algorithm generates a unique decryption key for each victim. All keys are stored on a remote server controlled by cyber criminals. Therefore, to receive a decryption key and restore data, each victim must pay a ransom. The cost is not specified - these details are provided via email. In most cases, however, costs fluctuate between $500 and $1500 in Bitcoins, Monero, Ethereum, or another cryptocurrency. Regardless of the cost, do not pay. Research shows that cyber criminals often ignore victims, once payments are submitted. Therefore, users often pay, receive nothing in return, and are scammed. Ignore all requests to contact these people or pay any ransoms. Unfortunately, there are no tools capable of cracking Mira encryption and restoring data free of charge. 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:

Mira decrypt instructions

Mira is virtually identical to dozens of other ransomware-type viruses, such as P3rf0rm4, Metan, and Robbinhood. Although the developers are different, these viruses have identical behavior - they encrypt data and make ransom demands. In most cases, these infections have just two major differences: 1) type of encryption algorithm used, and; 2) cost of decryption. Unfortunately, viruses such as Mira often use algorithms (e.g., RSA, AES, and similar) that generate unique decryption keys. Therefore, unless the virus is still in development or has certain bugs/flaws, restoring data manually without involvement of developers (contacting these people is not recommended) is impossible. Ransomware infections present a strong case for maintaining regular data backups, however, store them on a remote server (e.g., Cloud) or unplugged storage device (Flash drive, external hard drive, etc.). Locally stored backups are often encrypted together with regular data.

Mira ransomware technical analysis:

  • Detection names: Avast (Win32:Trojan-gen), BitDefender (Gen:Heur.Ransom.REntS.Gen.1), Kaspersky (HEUR:Trojan-Ransom.MSIL.Crypmod.gen), ESET-NOD32 (a variant of MSIL/Filecoder.SB)
  • Full list of antivirus detections: VirusTotal
  • Executable filename: can.exe
  • Sample first submitted: 2019-03-15

How did ransomware infect my computer?

It is currently unconfirmed exactly how developers proliferate Mira, however, they typically distribute these viruses using spam email campaigns, trojans, fake software updaters/cracks, and third party software download sources. Criminals use spam campaigns to send hundreds of thousands of emails that contain deceptive messages encouraging users to open malicious attachments. Opening them results in various system infections. Trojans are essentially malicious applications that infiltrate computers and stealthily download/install additional malware. Fake update tools infect computers by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than updates. Cracking tools activate paid software free of charge, however, these tools are often used to proliferate malware. Therefore, rather than gaining access to paid features, users typically end up infecting their computers. Unofficial download sources are also an issue. Developers use freeware download websites, free file hosting sites, peer-to-peer (P2P) networks (torrents, eMule, etc.) to present malicious executables as legitimate software. In doing so, these cyber criminals trick users into manually downloading and installing malware. In summary, the main reasons for computer infections are poor knowledge of these threats and careless behavior.

Threat Summary:
Name Mira virus
Threat Type Ransomware, Crypto Virus, Files locker.
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals request a ransom payment (usually in Bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All 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 Mira 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?

To prevent this situation, be very cautious when browsing the internet, and downloading, installing, and updating software. Carefully analyze each email attachment received. If you believe that the received file/link is irrelevant or the sender seems suspicious, do not open anything. Furthermore, download apps from official sources only, using direct download links. Third party downloaders/installers often include rogue apps, and thus these tools should never be used. Keep installed applications up-to-date is also extremely important, however, employ only implemented functions or tools provided by the official developer. You should never attempt to crack installed software, since the risk of infection is extremely high and software piracy is a cyber crime. Lastly, have a reputable anti-virus/anti-spyware suite installed and running. These tools detect and eliminate most infections before the system is harmed. The key to computer safety is caution. If your computer is already infected with Mira, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Mira ransomware text file ("!!!READ_IT!!!.txt"):


If you want to recover your data:

1.Send your personal ID to our emails.
2.You can send us 1 small file for test decryption.
3.After payment you will get decryption tool and opportunity to recover all your data.

 To avoid file loss, do not try to rename or modify encrypted files.
 Our contacts:


                   Your personal ID:

Screenshot of files encrypted by Mira (".mira" extension):

Files encrypted by Mira

Update April 3rd, 2019 - F-Secure has recently released a decryption tool capable of restoring files compromised by Mira ransomware free of charge (download link):

Mira ransomware decrypter

Update April 5th, 2019 - Emsisoft has recently released a decryption tool capable of restoring data encrypted by both PLANETARY and Mira ransomware infections free of charge (download link):

Emsisoft decrypter for PLANETARY and Mira ransomware

Mira ransomware removal:

Instant automatic removal of Mira 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 Mira 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 Mira 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 Mira 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 Mira 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 Mira 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 Mira, 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 Mira 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 Mira 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 pcrisk.com 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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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
Mira 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 Mira virus on your mobile device.
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Platform: Windows

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