.Sigrun Ransomware Removal (+File Recovery) Feb. 2019 Update

The encrypted files may not be the only damage done to you. parasite may still be hiding on your PC. To determine whether you've been infected with ransomware, we recommend downloading SpyHunter.

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More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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This page aims to help you remove .Sigrun Ransomware for free. Our instructions also cover how any .Sigrun file can be recovered.

A nasty PC cryptovirus, which can encrypt your files and blackmail you for their decryption is the focus of the article that you are reading now. The name of the infection is .Sigrun – a Ransomware representative, which should be avoided at all costs if you don’t want to face the dreadful consequences of its unbreakable encryption. Sadly, this malware can infect you in a very stealthy way, without triggering any visible symptoms. It usually targets your most valuable data such as documents, audio files, videos, images, archives and maybe even system data and converts them into unreadable pieces of data which cannot be accessed without a decryption key. In order to obtain that decryption key, the Ransomware asks you to pay a certain amount of money as ransom. The virus may threaten to never allow you to access any of your encrypted files if you don’t pay the ransom amount on time. If you have been attacked by .Sigrun, you are surely wondering if there is a way to remove the infection and avoid the ransom payment. Sadly, we have to tell you that there are not many methods, which can help you deal with this Ransomware and none of them can guarantee you a 100% recovery. However, in the next lines, we are going to offer you some potential solutions, which may be helpful. There is a detailed removal guide below, which contains step-by-step instructions on how to remove .Sigrun as well as some file-restoration suggestions that you may like to try.  There is also a professional .Sigrun removal tool suggested on this page, which can also aid you when it comes to dealing with this insidious Ransomware. Hopefully, all the information here will help you overcome the attack without paying ransom and minimize the losses from the infection.

.Sigrun Ransomware


How to remove .Sigrun?

While .Sigrun is on your computer, all the data on your system is at great risk. Basically, everything you keep on your PC and could be easily compromised. That’s why, the sooner you remove the Ransomware, the better. You may want to check out the instructions in the Removal Guide below, which may assist you in this process or you can scan your machine with the professional .Sigrun removal tool and let it detect the infection and remove it automatically. We need to warn you though that the encryption, applied to your files, may not be reversed once the malware is deleted. The best way to recover them is to rely on your file backups from where you can get them back. You may also like to give a try to the file-restoration instructions below, but, unfortunately, we cannot tell you how much of data you will be able to save with their help.

.Sigrun Ransomware Removal



Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

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Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Type msconfig in the search field and hit enter. A window will pop-up:


Go in Startup —> Uncheck entries that have “Unknown” as Manufacturer.

  • Please note that ransomware may even include a fake Manufacturer name to its process. Make sure you check out every process here is legitimate.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

Type Regedit in the windows search field and press EnterOnce inside, press CTRL and F together and type the virus’s Name. 

Search for the ransomware  in your registries and delete the entries. Be extremely careful –  you can damage your system if you delete entries not related to the ransomware.

Type each of the following in the Windows Search Field:

  1. %AppData%
  2. %LocalAppData%
  3. %ProgramData%
  4. %WinDir%
  5. %Temp%

Delete everything in Temp. The rest just check out for anything recently added. Remember to leave us a comment if you run into any trouble!


How to Decrypt .Sigrun files

We have a comprehensive (and daily updated) guide on how to decrypt your files. Check it out here.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

How can .Sigrun Ransomware infect you?

As per the information that our “How to remove” team has acquired, similarly to other Ransomware threats, .Sigrun tends to spread mostly via infected spam email attachments and other potentially compromised online content such as links, fake ads, torrents, compromised software installers and illegal websites. For this reason, our advice is to be extra careful when you come across such types of web content and never click on links or download attachments that come from shady or unfamiliar sources. It’s also possible that such a virus can come to your PC with the help of Trojan horse infections, which are usually disguised as commonly used files such as PDF files, .exe files, archives or other legitimate-looking documents and images. That’s why, it is best to have a reliable antivirus software installed on your computer, which can filter probable malware transmitters and notify you about them on time.

The blackmailing scheme in action!

Ransomware is famous for the complexity of its file encryption which may not always be reversible, oftentime posing a serious challenge to the security professionals. The fact that there are not many options that can help you recover from the attack makes threats like .Sigrun really fearful. Usually, the malware not only converts the targeted files into unreadable pieces of data via a complex encryption but it might also change their file extension so that no software can recognize and read them. The sole purpose of this action is to leave you without any way of accessing your data. Only this way, the hackers, who stay behind the Ransomware, can offer you their decryption key and blackmail you to pay ransom for it. Sadly, even if you do that, you can still have no guarantee that everything will be back to normal. The crooks usually claim that their key can reverse the secret encryption, but can you really trust them? And will they really send you that key once you pay? Unfortunately, no one can tell you for sure. The only sure thing is that they want to take your money via their nasty blackmailing scheme and by paying them, you are actually sponsoring their criminal practice. Isn’t it much wiser to remove .Sigrun and seek some legitimate professional assistance instead of giving your money to some anonymous hackers? In the end, the choice is yours.


Name .Sigrun
Type Ransomware
Danger Level High (Ransomware is by far the worst threat you can encounter)
Symptoms Very few and unnoticeable ones before the ransom notification comes up.
Distribution Method From fake ads and fake system requests to spam emails and contagious web pages.
Data Recovery Tool Currently Unavailable
Detection Tool

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