How to remove Nosu ransomware and decrypt .nosu files

What does .nosu mean?

If you see, that your files are unreadable and they have got new .nosu extension, it means that your computer has been attacked by Nosu ransomware. This virus belongs to the updated STOP(DJVU) file-encryption ransomware family, the only members of which nowadays are TOPI, REHA, KODC and PORET ransomwares. The characteristic feature of these viruses is their ability to spread very fast. It’s achieved by the ways how they spread. In the case of Nosu ransomware, as the rule, it spreads by the means of various installators and email attachments. In the case of emails, hackers inject the code of Nosu ransomware into a harmless file and it executes, once such a file has been opened. However, recently hackers have begun to widely use various remote access software, such as ScreenConnect, that can be distributed with bundles. By the means of these programs, hackers can easily get nearly a full access to the device. When Nosu ransomware successfully gets into the system, it immediately begins to make changes in the Registry and then implements the encryption process. When this process is done, the files suitable for encryption get new extension – .nosu. Then the virus drops the ransom note, called _readme.txt. The purpose of this note is to force a victim into purchasing a decryptor, however, hackers often simply ignore their victims, once they’ve been paid. We strongly recommend you to not contact with them, as it’s easy for them to make the situation much worse. However, the surest way to decrypt your files is to get the decryptor from hackers, but still there is a hope, that solutions mentioned in our guide on how to remove Nosu ransomware and decrypt .nosu files will help you!

_readme.txt

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Article’s Guide

1. How to remove Nosu Ransomware from your computer
2. How to decrypt Nosu files
3. Data Recovery
4. Automated decryption tools
5. Other software

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How to remove Nosu Ransomware from your computer?

We strongly recommend you to use a powerful anti-malware program that has this threat in its database. It will mitigate the risks of the wrong installation, and will remove Nosu from your computer with all of its leftovers and register files.

Solution for Windows users: our choice is Norton 360 . Norton 360 scans your computer and detects various threats like Nosu, then removes it with all of the related malicious files, folders and registry keys.

Download Norton

If you are Mac user, we advise you to use Combo Cleaner.

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How to decrypt .nosu files?

Once you’ve removed the virus, you are probably thinking how to decrypt .nosu files or at least restore them. Let’s take a look at possible ways of decrypting your data.

Restore .nosu files with Data Recovery

1. Download and install Data Recovery
2. Select drives and folders with your files, then click Scan.
3. Choose all the files in a folder, then press on Restore button.
4. Manage export location.

Download Stellar Data Recovery

_{The download is an evaluation version for recovering files. To unlock all features and tools, purchase is required ($49.99-299). By clicking the button you agree to EULA and Privacy Policy. Downloading will start automatically.}

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Decrypt .nosu files with other software

Unfortunately, due to the novelty of Nosu ransomware, there are no decryptors that can surely decrypt encrypted files. Still, there is no need to invest in the malicious scheme by paying a ransom. You are able to recover files manually.
You can try to use one of these methods in order to restore your encrypted data manually.

Decrypt .nosu files with Emsisoft decryptor

This software includes information about more than 100 viruses of STOP(DJVU) family and others. All that you need are two files or some luck. You can freely use it as it distributes free of charge. If it doesn’t work for you, you can use another method.