.nusar Files Virus (STOP Ransomware) – How to Remove It

.nusar Files Virus (STOP Ransomware) – How to Remove It

.nusar Files Virus virus remove

What is .nusar files virus .nusar files virus is also known as .nusar ransomware and encrypts users’ files while asking for a ransom.

The .nusar files virus is a new STOP/DJVU ransomware version. The hackers use different methods in order to infect as many users as possible. Following the typical behavior that has been observed in previous versions many system changes can take place. The end goal of the threat is to encrypt user data and rename it with the .nusar extension.

Threat Summary

Name.nusar files virus
TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts files on your computer machine and demands a ransom to be paid to allegedly restore them.
SymptomsThe ransomware will blackmail the victims to pay them a decryption fee. Sensitive user data may be encrypted by the ransomware code.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .nusar files virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .nusar files virus.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.nusar Files Virus – Decryptor Released (July 2019 Update)

In Juy 2019 a decryptor for the .nusar files virus and its collected so far STOP ransomware offline ID’s. This means that it will work for some of the infections but not all of them. Furthermore there is no guarnatee that it will not corrupt the data. In all cases it is way of attempting to restore and recover the encrypted data.
See this article for more information:

Remove STOP (DJVU) Ransomware + Decrypt Files

.nusar Files Virus – Detailed Description

The .nusar files virus is a new derivative of the STOP ransomware which is being spread using the most common delivery tactics. This includes the coordination of phishing campaigns that are carried through emails and hosted on hacker-controlled sites. They seek to confuse the recipients into thinking that they have accessed safe contents. The virus installation code can also be embedded in various types of file carriers. Two are the most popular examples — macro-infected documents of all types and setup files of commonly used software. These file carriers may also be uploaded to the file-sharing networks like BitTorrent where both pirate and legitimate contents are found.

Like other STOP ransomware variants the .nusar files virus will launch a series of malicious actions. In most cases this usually includes a data harvesting process aiming to retrieve information that can identify the victims — the data can be used for crimes like financial abuse and identity theft. Any machine metrics which are hijacked may be used to generate an unique ID that can be associated with each compromised host. Further use of the harvested information may be used for a security bypass which will identify and remove security applications such as: anti-virus programs, sandbox environments, virtual machine hosts and firewalls.

Other changes that can be made by the .nuras files virus include the following:

  • Persistent Installation — The made .nuras ransomware infections can be installed in a way which will automatically start the virus code when the computer is powered on. This is especially alarming as it can block access to the recovery boot options.
  • Windows Registry Values — New entries for the virus can be made or existing ones can be modified. This can result in issues such as stability problems, data loss and unexpected errors.
  • Additional Malware Delivery — In some cases the hackers can make the .nuras files virus install other threats to the compromised machines.
  • Data Modification — The virus engine can identify and remove select system data such as backups, shadow volume copies and restore points.

As soon as all modules have completed running the relevant encryption phase will be started. As typical for this ransomware family a built-in list will guide the virus into processing the following data: archives, backups, databases, multimedia files and etc. All encrypted files will be renamed with the .nusar extension and a ransomware note will be crafted to blackmail the victims into paying the hackers.

.nusar Files Virus – What Does It Do?

The .nusar Files Virus is a crypto virus programmed to encrypt user data. As soon as all modules have finished running in their prescribed order the lockscreen will launch an application frame which will prevent the users from interacting with their computers. It will display the ransomware note to the victims.

You should NOT under any circumstances pay any ransom sum. Your files may not get recovered, and nobody could give you a guarantee for that.

The .nusar Files Virus cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

If your computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially restore your files back to normal.

Remove .nusar Files Virus

If your computer system got infected with the .nusar Files ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.


Martin Beltov

Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.

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  1. AvatarAlejandro

    Hola, mi PC fue infectada por ransomware .nusar. Todos mis archivos están incriptados con esa extensión. Necesito que me ayudes por favor!! Elimine el virus reinstalando Windows 10. Pero mis archivos quedaron inutilizables. He intentado con varios desincriptadores, pero ninguno me ha funcionado. Por favor ayúdame!!!!!

    1. AvatarMilena Dimitrova

      Hi Alejandro,

      Currently, there is no decrypter for .nusar files. You can try alternative data recovery methods listed in the article but unfortunately there is no guarantee they will work. Our advice is to be patient and wait for an official decrypter.


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