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Shigo ransomware virus. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Ransomware
12

How terrifying is Shigo ransomware?

Shigo virus operates as a ransomware able to encrypt your files. Since the malware still keeps a low profile and it has not launched its massive campaign yet, many speculations arise. It is known that the malware encrypts users data with a symmetric algorithm – AES [1]. Since there is little information about the structure and capabilities, do not underestimate it and instead focus on Shigo removal. You can do it with the help of Reimage. Make sure the utility is updated. However, this software does not decrypt the files which now bear .shigo file extension. Below the article, you will find several suggestions how to do it.

It seems that the surge in crypto-malware is directly linked to the holiday season [2]. IT specialists already warn users to stay vigilant and beware of scams ranging from corrupted failed-delivery spam emails to counterfeited Office of Personnel Management messages [3]. Speaking of Shigo ransomware, virus researchers still estimate how much samples of this virus infection lurk in the web. The virus might have originated from within Japan‘s territory since the title suggests “shi” and “go” meaning ‘four” and “five” in the Japanese. Certainly, it might be just a diversion. Regarding the ransom note, scarce information is provided about the further steps to decrypt the data. It presents the bitcoin address for the assaulted users to make the transaction.

The picture revealing Shigo ransomware

Regarding the amount of ransomware, it varies in each case, but mostly 1 Bitcoin (currently 778,02 USD) is demanded in exchange for the decrypter. Racketeers might recommend you to install Shigo Decrypter. You should restrain from doing so as you may only make matters worse. In short, the decryption software might decode some of your files but at the same time leave hidden elements which only facilitate Shigo hijack in the future. You should not rely on hackers’ conscience and hope for the retrieval of the files when after remitting the payment since the recent case of PopCornTime ransomware reveals that crooks see no limits in messing with their victims [4].

How is the malware dispersed?

Usually, file-encrypting infections are transmitted via spam emails. Despite such surge in the number of malicious infections, netizens still fall into hackers’ trap and execute the malicious attachment which hides the binary of Shigo malware or another crypto-virus. Alternatively, some ransomware threats deviate to using the services of exploit kits and trojans. Detecting them manually is nearly impossible. As a result, every user should have a security tool monitoring the safety of the PC. However, hackers work restlessly to discover new channels and ways to violate users’ privacy and infect their computers. Those, who use Tor network, should be alerted not to run into a malware while using this network [5].

Quick Shigo termination method

Do not waste time on this virus and proceed to Shigo removal. Reimage or Malwarebytes Anti Malware is an optimal solution since it saves your time and nerves by dealing with the virus effectively. It locates all reacted components and eradicates them completely. Such software also comes in handy getting rid of vivid malware: rootkits, browser hijackers, adware, backdoors, etc. If you cannot remove Shigo virus because it has messed up with your registry, which resulted in the inefficiency of the computer, scroll down and use the below-indicated instructions.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Shigo ransomware virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
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Manual Shigo virus Removal Guide:

Remove Shigo using Safe Mode with Networking

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Shigo

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Shigo removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Shigo using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Shigo. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Shigo removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Shigo from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Shigo, you can use several methods to restore them:

Data Recovery Pro option

Brush desperation aside and give this tool a try. It might help you retrieve the locked valuable documents and files.

How effective is Windows Previous Versions feature?

It increases your chances of recovering the files only if System Restore is activated. Go through each file and look for the last saved copy of your file.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Should you use ShadowExplorer?

This utility is extremely beneficial in cases like this one. The software locates shadow volume copies and recreates the files according to the patterns. 

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Shigo and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Julie Splinters - Malware removal specialist

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References


  • clayMN

    Do such viruses really exist?

  • boit5000

    I hope they will never be updated…

  • petrifucus6474

    No amusing ransomware today?