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GandCrab2 ransomware. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware

GandCrab v2 – the second version of the notorious ransomware virus which is asking 500 USD to recover victim's files

Printscreen of GandCrab2 ransom note
GandCrab2 virus - dangerous ransomware which is asking $500 for the special decryption key which is needed to recover encrypted files.

Questions about GandCrab2 ransomware

GandCrab v2 ransomware is a cryptovirus which has been developed soon after the GandCrab – one of the most aggressive forms of ransomware.[1] Just like its predecessor, the new version is distributed via Seamless malvertising campaign leading victims to RIG exploit kit. Nevertheless, it can also be disguised under HoeflerText Font Update scam[2] pop-ups. Upon successful infiltration, ransomware appends .CRAB file extension to each locked file and generates a CRAB-DECRYPT.txt ransom note.

Name GandCrab v2
Type ransomware
The predecessor Gandcrab ransomware
Distribution techniques
    • RIG Exploit kit;
    • Fake “HoeflerText Font NOT Found” ads;
    • Spam campaigns.
Ransom amount 500 USD
Currency  Dash 
File extension .CRAB
Ransom note CRAB-DECRYPT.txt
Elimination Use Reimage to get rid of Gandcrab or any its versions

The malware redirects its victims to TOR site, which contains instructs the victim what they have to do to decrypt locked files. While the original variant of GandCrab2 demanded 1200 USD in Dash coins,[3] the new version detected at the beginning of March 2018 asks for 500 USD in Dash coins.

However, specialists mock the attempt of GandCrab2 virus developers to maximize profit since the virus can be decrypted using a free GandCrab decryptor available at NoMoreRansom. However, crooks provide a link to a decryption tutorial on NoMoreRansom and scare people by falsely claiming that the tool won't decrypt files. Contrary, it will make data undecryptable. Nevertheless, experts point out that the GandCrab2 (version 1.0.0r) and the GandCrab (v2.3.*) belong to the same group and can be decrypted in the same way.

To protect yourself from GandCrab2 ransomware attack, be careful with .doc file email attachments. Despite the fact that such spam emails can be sent by official authorities or other pretend-to-be legitimate sources, by opening a .doc file attached to a suspicious email can run a PowerShell script, which creates a sct5.txt or 128384.txt file, which connects to the remote server and download the ultimate GandCrab2 ransomware payload. In case of HoeflerText Font Update scam attack, the system gets infected with Font_Update.exe file, which subsequently downloads a g.js scrip and remote access tool known as NetSupport Manager remote access utility, which executes the ransomware completely.

Those whose files have already been encrypted by .CRAB file extension virus should immediately remove GandCrab2 virus. For this purpose, we recommend using Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes tool as they are powerful enough to detect and neutralize all related components. Following successful GandCrab2 removal, you should download a free decryptor provided in NoMoreRansom and decrypt your files with it.

Cybercrooks distribute viruses via malspam campaigns and fake updates

The developers of malicious cyber infections are accustomed to the use of exploit kits. Their purpose is to detect the vulnerabilities on the targeted system and open the back door for the cyber infections to enter the system quickly. This particular ransomware relies on the combination of two exploit kits – RIG and GrandSoft.[4]

Typically, people are exposed to the exploit kits by sending them malicious emails with infected .doc file attachments. Spam emails are developed in a way to mimic well-known brands or official institutions. In this particular case, people get an email message with the subject Receipt Feb-21310 [ random numbered] sent by [ransom name ]@cdkconstruction.org. Most of the victims reported that such email does not expatiate on the subject, but only indicate the fact that “DOC attached.” Beware that the type of the attached file might also differ, but usually, the file extension is somewhat suspicious ( .EXE, .COM, .PIF, .SCR, .HTA, etc.).

Apart from malspam, people can end up with this ransomware after downloading a fake “Chrome Font Pack” on hacked websites. People can be exposed to compromised domains by mistyping domain's name or after clicking on infected ads. The hacked website displays a scrambled text by default and generates a notification saying that “The “HoeflerText” font wasn't found” and urges people to install the fake font pack to see the content of the website normally.

GandCrab2 removal tutorial

Manual GandCrab2 removal is not possible. In general, ransomware virus cannot be eliminated manually as they inject multiple files, corrupt registries, change startup settings, and initiate other system's changes to evade easy detection and removal.

To remove GandCrab2 virus and get back the data, experts from senzavirus.it[5] recommend people to download Reimage, Malwarebytes MalwarebytesCombo Cleaner, Plumbytes Anti-MalwareMalwarebytes Malwarebytes or another reputable anti-malware tool. If you are currently using one, make sure to update its definitions before running a scan.

Don't fall into a panic if you cannot launch your anti-virus. The gandcrab2 virus can use helper objects that block any security-related tool. In this case, you should try to boot the system into Safe Mode with Networking or a couple of other methods to bypass ransomware's code. You can learn how to create safe environment on your computer before you start the removal of GandCrab v2 below. After you recover the data by following the step-by-step instructions below. 

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. 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.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove GandCrab2 virus, follow these steps:

Remove GandCrab2 using Safe Mode with Networking

If ransomware block anti-virus tools, try to restart the system into Safe Mode with Networking and re-try to launch it in this mode:

  • 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 GandCrab2

    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 GandCrab2 removal.

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

Remove GandCrab2 using System Restore

In case the first removal method failed to work, you should follow these steps:

  • 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 GandCrab2. 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 GandCrab2 removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove GandCrab2 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 GandCrab2, you can use several methods to restore them:

Data Recovery Pro – a software that can recover files encrypted by any ransomware

Originally Data Recovery Pro tool has been developed to recover files that were deleted accidentally or lost due to fatal system's crash. Nevertheless, the powerful search engine and recovery feature makes Data Recovery Pro capable of decrypting files locked by ransomware viruses. 

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by GandCrab2 ransomware;
  • Restore them.

Windows Previous Versions feature – alternative data recovery method

If you create System Restore Points regularly, then you must have one created before GandCrab2 malware attack. Enabling the previous version of the system can help you to decrypt locked files. 

  • 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”.

Recover data from Shadow Volume Copies

Although most ransomware virus delete Shadow Volume Copies, some of them fail to do so. However, there's no other way to check that except as to download ShadowExplorer and try to recover encrypted files using it. 

  • 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.

Use free GandCrab2 decryptor

GandCrab2 virus can be decrypted with the help of free GandCrab decryptor that can be downloaded from NoMoreRansom

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from GandCrab2 and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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References

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