How to remove Helpshadow virus and restore encrypted files

Helpshadow ransomware virus

This article is dedicated to Helpshadow virus that gets onto users' laptops in all countries of the world, and cyphers the files. Here we've compiled important info about Helpshadow's essence, and how to remove Helpshadow from your workstation. Except that, we'll explain how to recover the corrupted information, if possible.

Helpshadow ransomware already penetrated thousands of computers around the world via basic manner: false messages with viral attachments. Also, scammers use zero-day vulnerabilities to penetrate the PC, but they are quickly fixed. When infection takes place, ransomware scans the PC memory to find the folders to be encrypted and their general price. Currently, each new virus is able to encrypt text, video, image and audio information in all most used formats. Helpshadow cyphers all files, but the ones that look like business records go first. Ransomware corrupts only information, and does not affect the programs, so that the user can use the PC to make the payment. The process is performed through famous AES and RSA algorithms, and it is so complex that that it cannot be bruteforced. Such complexity creates foundation for impressive efficiency of ransomware in recent years: usual customer, even if he has a pretty good knowledge of the computer, will never recover the files, and will need to pay ransom. The only way to get back files is to crack the scammer's webpage and retrieve the master key. Some experienced malware specialists can obtain these keys via flaws in the code of the virus itself. When encrypting files, Helpshadow switches the extension of files to .Djvu.

There is one common feature for all types of hazardous software: it's much easier to prevent it than to remove its consequences. It's sad to say, but 90% of customers understand the significance of PC literacy just after ransomware infection. To protect yourself, you need to remember these three basic rules:

  • Be careful with the e-mails that contain data. The most efficient template of fraud messages is the story about prize winning or package receiving. The #2 popular sort of scam letters is a "business messages". It is normal to be interested and click on the letter even if it might be not for you, but don't forget that one click on the viral file may cost you a lot of headache, money and time.
  • Do not admit any changes to your computer, originating from unknown programs. If the workstation is penetrated by Helpshadow, it will endeavour to delete the shadow copies of the files, to make the recovery impossible. Anyway, deleting of copies requires admin rights and confirmation from the user. The second of thinking before accepting the dialogue box might save your data and your money.
  • Monitor the performance of your workstation. Data encryption is a sophisticated operation that needs a high amount of computer resources. If you see a sudden fall in laptop performance or see a strange string in the Process Manager, you should switch off the workstation, load it in safe mode, and run the antivirus. Naturally, some files will be corrupted, but you will secure the rest of them.

Malware removal is not answer to the whole issue - it's just a one turn from many before the full file recovery. If you delete ransomware, you won't recover the files immediately, it will need more actions described in the following section. To deelete Helpshadow, user needs to boot the laptop at safe mode and scan it with AV-tool. We don't advise trying to remove Helpshadow by hand, since it has various security features that will interfere you. The most efficient viral protection technique is the removal of data in case of data decryption or virus deletion attempt. To avoid this, abide to the tips under this paragraph.

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

After uninstalling the virus from the system, you should restore the polluted information. It's impossible to decypher the data, but we'll recover them through Windows functionality and the additional software. Usually, to recover the data, the victim has to ask for support on anti-malware forums or from well-known virus fighters and antivirus software manufacturers. If you don't want to wait and are ready to restore the data manually - here's the full entry on data recovery.

To restore information, follow the article about files decryption.

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