Once the ecryption of your files is finished the .Nusar Ransomware will leave a _readme.txt file behind describing what you need to do.

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Ever since it first got created, the Ransomware malware category has always been a particularly unpleasant form of computer threats. Nowadays, to spread their malicious programs, the creators behind this type of malware use mass spam campaigns to send out infected email letters and different attractive and legitimate-looking pieces of data, which are designed to trick the web users about the real nature of the viruses in order to infect as many computers as possible.

The first action that these types of infections carry out once they secretly sneak in the system is they block the computers of their victims, or restrict the access to the information stored on it, leaving the users without any way of using the computer or opening the files. One specific variant of Ransomware, also known as a cryptovirus, is famous for its ability to lock important user files through data encryption, making it inaccessible. .Nusar is the specific Ransomware cryptovirus program that we will be telling you about in the next lines.

If you are on this page because your files have been encrypted by .Nusar, and a scary ransom-demanding notification has asked you to pay a certain amount of money to some anonymous hackers in exchange for the decryption of your valuable data, stay with us to learn exactly what you are up against. Below, we have prepared a set of instructions, neatly organized in a removal guide, which will help you remove the cryptovirus and potentially get around the requested payment. However, don’t scroll down to them just yet, and take a look at the information that explains how to prevent Ransomware infections and what alternatives you can use to save your files without paying the crooks.

How to prevent getting infected with .Nusar and other Ransomware?

Below, you will see a series of steps and tips to follow that may help you avoid becoming a victim of Ransomware such as .Nusar in the future:

• Keep all software, that needs updates, updated – no exceptions.
• Make sure that automatic updates are active in order to receive the latest system security patches.
• Keep the firewall activated at all times.
• Use a quality pop-up blocker/ad-blocker.
• Malicious files hide their true nature using different social-engineering techniques. Keep away from unknown messages, shady installers, too-good-to-be-true offers, and spam.
• Always have updated backup copies of all of your files that you consider important and never connect your computer to your backup if there is a Ransomware cryptovirus currently in the computer. To use the backup, you must first make sure that the malware is fully gone.
• Do not open spam emails or click on links from suspicious websites, even if they have been sent by a person you know.
• Only download trusted software from original sites and official developers. Malware such as .Nusar can also come in pirated games, file sharing programs, and custom toolbars.
• Use the same precautions on your smartphone as you would on your computer or laptop.
• Invest in reliable anti-malware software with advanced Ransomware detection features – such software could help prevent this type of malware proactively.

What if you have already been infected?

In case you have confirmed that your computer has been infected with .Nusar,  .Lotep or .Neras it is advisable to carefully explore the possible solutions that can help you remove the infection and save your files. For more details, you can follow the steps shown in the guide below and perform a scan with a trusted malware removal tool.

.Nusar SUMMARY:

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Remove .Nusar Virus File Ransomware 

1: Preparations

Note: Before you go any further, we advise you to bookmark this page or have it open on a separate device such as your smartphone or another PC. Some of the steps might require you to exit your browser on this PC.

2: Task Manager

Press Ctrl + Shift + Esc to enter the Task Manager. Go to the Tab labeled Processes (Details for Win 8/10). Carefully look through the list of processes that are currently active on you PC.

If any of them seems shady, consumes too much RAM/CPU or has some strange description or no description at all, right-click on it, select Open File Location and delete everything there.

Also, even if you do not delete the files, be sure to stop the process by right-clicking on it and selecting End Process.

3: IP related to .Nusar

Go to c:\windows\system32\drivers\etc\hosts. Open the hosts file with notepad.

Find where it says Localhost and take a look below that. 

If you see any IP addresses there (below Localhost) send them to us here, in the comments since they might be coming from the .Nusar.

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4: Disable Startup programs

Re-open the Start Menu and type msconfig.

Click on the first search result. In the next window, go to the Startup tab. If you are on Win 10,  it will send you to the Startup part of the task manager instead, as in the picture:

If you see any sketchy/shady looking entries in the list with an unknown manufacturer or a manufacturer name that looks suspicious as there could be a link between them and .Nusar , disable those programs and select OK.

5: Registry Editor

Press Windows key + R and in the resulting window type regedit.

Now, press Ctrl + F and type the name of the virus.

Delete everything that gets found. If you are not sure about whether to delete something, do not hesitate to ask us in the comments. Keep in mind that if you delete the wrong thing, you might cause all sorts of issues to your PC.

6: Deleting potentially malicious data – .Nusar

Type each of the following locations in the Windows search box and hit enter to open the locations:

%AppData%

%LocalAppData%

%ProgramData%

%WinDir%

%Temp%

Delete everything you see in Temp linked to .Nusar Ransomware. About the other folders, sort their contents by date and delete only the most recent entries. As always, if you are not sure about something, write to us in the comment section.

7: .Nusar Decryption

The previous steps were all aimed at removing the .Nusar Ransomware from your PC. However, in order to regain access to your files, you will also need to decrypt them or restore them. For that, we have a separate article with detailed instructions on what you have to do in order to unlock your data. Here is a link to that guide.

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