What is MOSN Ransomware

MOSN is categorized as a ransomware infection that demands money from victims after encrypting data. Normally, such infections strike all potentially important files like photos, videos, documents, databases, and more that comprise some value to victims. The encryption can be spotted by new extensions that are assigned to each compromised piece. For instance, a file named 1.pdf will change to 1.pdf.MOSN at the end of encryption. The same will be seen with other data according to this pattern. Then, soon after this, MOSN installs new wallpapers stretched out across the entire screen that displays a short ransom summary. It states victims should contact developers via walter1964@mail2tor.com e-mail address and pay 300$ in Bitcoin for data redemption. Additionally, MOSN Ransomware creates a text file called INFORMATION_READ_ME.txt that explains the same but also mentions the number of encrypted files and unique ID that should be attached whilst contacting extortionists.


300$ in Bitcoins
CONTACT: walter1964@mail2tor.com

Unfortunately, in most ransomware scenarios, decrypting data without cybercriminals appear to be almost an impossible task. This is because developers are the only figures knowing how to approach the encrypted data correctly. Using third-party instruments may be a good, but still risky idea as it can damage your files forever. This is why the only and best way to avoid paying the ransom is deleting ransomware and recovering files via backup copies. If there is no such option available in your case, you can still give it a try via special decryption and recovery tools developed by third-party vendors. All possible solutions, as well as removal instructions, are presented below.

mosn ransomware

How MOSN Ransomware infected your computer

File-encryptors and other malware can be spread via hacked RDP configuration, e-mail spam letters, backdoors, trojans, keyloggers, fake updates or antimalware software, and other kinds of suspicious channels. Most notably, ransomware infections have been distributed via so-called spam, bombarded by e-mail. Cybercriminals learned this is hyper-effective and started sending a bunch of identical letters that store malicious attachments. Usually, inexperienced users are less likely to distinguish whether something malicious is present. Fraudulent figures make everything sure that no inexperienced user spots something suspicious. They disguise their messages as something “legitimate” or “urgent”, falsify e-mail addresses with genuine-looking names, and tell users to open the files or links. Such files are usually PDF, EXE, DOCX, XLSX, ZIP, RAR, or JS formats bundled inside of a message. Once opened, they are likely to install malicious software like MOSN Ransomware. Note that these file formats have nothing in common with malware initially, however, some frauds are educated enough to adjust them for containing infections. If you are looking for complete malware protection to combat such threats in the future, follow our guidelines below. There is a lot of useful information dedicated to it.

  1. Download MOSN Ransomware Removal Tool
  2. Get decryption tool for .MOSN 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 MOSN Ransomware

Download Removal Tool

Download Removal Tool

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

Alternative Removal Tool

Download SpyHunter 5

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

MOSN Ransomware files:


MOSN Ransomware registry keys:

no information

How to decrypt and restore .MOSN files

Use automated decryptors

Download Kaspersky RakhniDecryptor

kaspersky dharma ransomware decryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt .MOSN 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 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 .MOSN files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing 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 MOSN Ransomware and removed 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 .MOSN 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 MOSN Ransomware, in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.

Download ZoneAlarm Anti-Ransomware

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. MOSN 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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James Kramer
Hello, I'm James. My website Bugsfighter.com, a culmination of a decade's journey in the realms of computer troubleshooting, software testing, and development. My mission here is to offer you comprehensive, yet user-friendly guides across a spectrum of topics in this niche. Should you encounter any challenges with the software or the methodologies I endorse, please know that I am readily accessible for assistance. For any inquiries or further communication, feel free to reach out through the 'Contacts' page. Your journey towards seamless computing starts here