How to remove Sigrun virus and restore encrypted files

Today's guide will help users to get rid of Sigrun virus. Here, we'll give you everything that you should learn about Sigrun elimination, coupled with some tips about the decryption of wasted files. We also provide the essential tips about ransomware that can assist you to avoid problems next time.

Sigrun ransomware virus

Sigrun is the worst misfortune which can meet you on the Web It is a pure robbery, but with no real pillagers involved: hackers penetrate the computer and take everything they need, casting you aside with an empty hard drive that contains only wasted files. Sigrun ransomware is the purest instance of this type of viruses: it’s not difficult to get and almost impossible to defeat, but there are a few measures that you can take. On this page, we will explain to you what is Sigrun and the methods of its penetration into the PC. We'll tell you how you can evade ransomware penetration, and what you have to do to decrypt your files. Remember that many the ransomware will never get defeated, and one of them is on your device – your files may be already lost completely. Rarely even web-criminals make a mistake to create the approach to uninstall their virus or to reverse the caused harm. The user can be protected by specific options of the PC, and we'll teach you how you can use it.

What is Sigrun ransomware

The thing is that the common encrypting programs use the well-known ciphers, such as the RSA and the AES. They are very sophisticated and cannot be broken. Well, you may decipher them if you have a century of the home computer’s working time or a few years of work on the most efficient computer of the Earth. We don't think that any of the given options suits you. The perfect method to defeat Sigrun is to abort its installation, and we'll tell you how it could be done.

The encoding programs, also known as ransomware, are the viruses that infect users’ devices and encode their info to earn money for its recovery. The penetration is usually performed with the help of email spam or 0-day vulnerabilities. E-mail spam is very easy to recognize – you'll receive it suddenly, and there will be a file in it. If we're talking about 0-day Trojans, it’s a bit substantially more difficult – you'll never see what it will be until you get taken over which means that the best method is to regularly download the newest updates for the system and other tools that you use.

The program structure of ransomware isn't a big deal, but even the clumsiest ransomware is extremely perilous, and we can prove our point. They all apply the very strong mechanisms of encryption. Ransomware doesn't take the data. Everything it has to do is to penetrate the system, encode the data and erase the originals, leaving the spoiled files instead of them. The data are unusuable if they are encrypted. You cannot read the files and can’t repair them. There are not many methods to restore the information, and we've described them all in our piece.

When the ciphering is carried out, hackers give you a ransom message, and is it appeared – you can be certain that the data are encrypted. The only measure you can take now - to eliminate ransomware from the machine and try to reconstruct the files. We've said “try” as the odds to deal with it not having a decryption tool are very low.

Sigrun removal guide

It’s highly important to uninstall a virus before you proceed because if it sticks in the system – it will start encrypting each file which enters the machine. Even more - any device you are connecting to the infected computer will get infected also. We know that it's not great for you, so just delete Sigrun through following our plain removal guide. Keep in mind that the deletion won’t restore the information, and if you do it, you won’t be able to pay the ransom. We advise you to do that because every ransom received makes web-criminals more confident in fraud schemes and gives them more money to invent more viruses. Significant point is that when you’re forced to deal with hackers, they may easily take your money and forget about you. They have recently stolen your files, and if you lean to transfer them your funds after that.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner


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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

How to decrypt Sigrun files

When the virus is removed from your PC, and you're certain about it, you should learn more about the decryption techniques. Firstly, we should notice that the most effective manner is to have the backup copies. If you have the backups of your information and the ransomware is totally removed – just delete the encrypted files and upload the backups. In case there were no backup copies – the chances to get the files are slim to none. Shadow Volume Copies service is your lucky ticket. It’s the basic service of Windows that copies each file that was altered. You can find them via custom recovery programs.

Of course, all high-quality viruses might eliminate these copies, but if you're working from an account without administrator rights, Sigrun simply had no way perform that not having your permission. You may remember that sometime prior to the showing of a swindler's note there was a different dialogue window, suggesting to make alterations to your PC. If you've declined these alterations – your copies weren't deleted, and they might be accessed via special tools as Recuva or ShadowExplorer. You may simply locate them both in the Web. Both of them have their official pages, so you have to get them from there, with step-by-step instructions. If you require more information about this – just read this entry about file repair: article about files decryption.

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