What is Matroska Ransomware

Matroska Ransomware is a malicious piece aimed at data encryption. Matroska used to show its activity a couple of years ago until it went dormant. Within some time, it started a series of new infections on users’ PCs. Whilst older examples of Matroska applied the .HUSTONWEHAVEAPROBLEM@KEEMAIL.ME, .happyness, .encrypted[Payfordecrypt@protonmail.com], .nefartanulo@protonmail.com extensions to encrypted files, recent attacks of this ransomware showed the new .siliconegun@tutanota.com extension being involved. Depending on which version impacted your system, a file like 1.mp4 will change to 1.mp4.happyness or 1.mp4.siliconegun@tutanota.com at the end of encryption. Once this process is finished, the virus goes further and creates a text file (HOW_TO_RECOVER_ENCRYPTED_FILES) with decryption instructions.

Matroska Ransomware (.happyness extensions)Matroska Ransomware (.siliconegun@tutanota.com extensions)

YOUR FILES ARE ENCRYPTED!
Your personal ID
[redacted base64] All your files have been encrypted due to a security problem with your PC.
To restore all your files, you need a decryption.
If you want to restore them, write us to the e-mail
happyness@keemail.me.
In a letter to send Your personal ID (see In the beginning of this document).
You have to pay for decryption in Bitcoins.
The price depends on how fast you write to us.
After payment we will send you the decryption tool that will decrypt all your files.
In the letter, you will receive instructions to decrypt your files!
In a response letter you will receive the address of Bitcoin-wallet, which is necessary to perform the transfer of funds.
HURRY! Your personal code for decryption stored with us only 72 HOURS!
Our tech support is available 24 \ 7
Do not delete: Your personal ID
Write on e-mail, we will help you!
Free decryption as guarantee
Before paying you can send to us up to 1 files for free decryption.
Please note that files must NOT contain valuable information and their total size must be less than 5Mb.
When the transfer is confirmed, you will receive interpreter files to your computer.
After start-interpreter program, all your files will be restored.
Attention!
Do not rename encrypted files.
Do not try to decrypt your data using third party software, it may cause permanent data loss.
Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Do not attempt to remove the program or run the anti-virus tools
Attempts to self-decrypting files will result in the loss of your data
Decoders are not compatible with other users of your data, because each user's unique encryption key


YOUR FILES ARE ENCRYPTED!
Your personal ID
{redacted}
All your files have been encrypted due to a security problem with your PC.
To restore all your files, you need a decryption.
Write us:
e-mail siliconegun@tutanota.com
or Telegram: https://t.me/yourDatasellers
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
OTHERWISE YOUR PERSONAL DATA, DOCUMENTS AND DATABASES
WILL BE PUBLISHED IN OPEN DATA SOURCES AND SENT TO YOUR PARTNERS
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Alike other ransomware infections, Matroska asks victims to pay a fee. The amount may vary from person to person, however, we do not recommend buying their software. Luckily, experts found that Dr.Web (leading antimalware software) is able to decrypt your data legitimately and risk-free. Before doing so, you’ve got to make sure you deleted Matroska Ransomware from your computer. Only then you can use third-party tools to recover the data. For more information on both removal and data decryption, follow the article down below.

How Matroska Ransomware infected your computer

Because Matroska is a ransomware infection, it is oftentimes spread via e-mail messages categorized as spam. If you received a message that contains unknown attachments, more likely there is something to be afraid of. This is because such messages are spread and disguised as legitimate companies that deliver newsletters or similar content. In reality, they have no correlation with original companies. Simply said, spam messages sent by ostensibly legitimate sources, try to fool inexperienced users into clicking on the malicious files. Note that cybercriminals usually use MS Office documents, PDFs, executables, and JavaScript files to hide their malware. Although these file types are initially legitimate, some extortionists find them to be a good cover for running fraudulent activity. With that said, you should also know about trojans, fake software cracking tools, backdoors, keyloggers, and other channels used to deliver various types of malware. In order to prevent these channels from reaching your PC, it is important to be careful and protect yourself with anti-malware software.

  1. Download Matroska Ransomware Removal Tool
  2. Get decryption tool for .happyness or .siliconegun@tutanota.com files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. How to protect from threats like Matroska Ransomware

Download Removal Tool

Download Removal Tool

To remove Matroska Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders, and registry keys of Matroska Ransomware and prevents future infections by similar viruses.

Alternative Removal Tool

Download SpyHunter 5

To remove Matroska Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Matroska Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

Matroska Ransomware files:


HOW_TO_RECOVER_ENCRYPTED_FILES.txt
mscauth.exe
{randomfilename}.exe

Matroska Ransomware registry keys:

no information

How to decrypt and restore .happyness or .siliconegun@tutanota.com files

Use automated decryptors

Download Kaspersky RakhniDecryptor

kaspersky dharma ransomware decryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt .happyness or .siliconegun@tutanota.com files. Download it here:

Download RakhniDecryptor

There is no purpose to pay the ransom because there is no guarantee you will receive the key, but you will put your bank credentials at risk.

Dr.Web confirmed ability to decrypt certain versions of Matroska Ransomware, all you need is to be an existing client or purchase one of the Dr. Web products and make a support request.

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .happyness or .siliconegun@tutanota.com files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with Matroska Ransomware and removed it from your computer you can try to decrypt your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .happyness or .siliconegun@tutanota.com files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click Recover Data button.
  3. Select type of files you want to restore and click Next button.
  4. Choose location where you would like to restore files from and click Scan button.
  5. Preview found files, choose ones you will restore and click Recover.
Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

  1. Right-click on infected file and choose Properties.
  2. Select Previous Versions tab.
  3. Choose particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

  1. Download Shadow Explorer program.
  2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like Matroska Ransomware, in future

1. Get special anti-ransomware software

Use BitDefender Anti-Ransomware

bitdefender anti-ransomware

Famous antivirus vendor BitDefender released a free tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. It will not conflict with bigger security applications. If you are searching complete internet security solution consider upgrading to full version of BitDefender Internet Security 2018.

Download BitDefender Anti-Ransomware

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storages, such as hard drives, SSDs, flash drives, or remote network storages can be instantly infected by the virus once plugged in or connected to. Matroska Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

Download MailWasher Pro
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