GANDCRAB V4 Ransomware – Remove + Restore .KRAB Encrypted Files

by Ventsislav Krastev | July 2, 2018 | 4 Comments .KRAB File Extension, file-encryption, GandCrab, GANDCRAB V4, malware, ransomware, Update January 2019

This article has been written with the main goal of helping you understand what is the GANDCRAB V4 ransomware virus and how to effectively remove it from your PC plus how you can attempt to recover .KRAB files, encrypted by this iteration.

GANDCRAB has successfully come out in a new version, using the .KRAB file extension. With this new version, the ransomware virus, demanding victims to pay the ransom in the DASH cryptocurrency, has become one of the biggest ransomware viruses alongside big ransomware families like WannaCry, Dharma, CryptoWall and CryptoLocker. The main purpose of .KRAB this version of GANDCRAB is to encrypt your data. Typically, the ransomware drops a ransom note file, called KRAB-DECRYPT.txt, which aims to extort victims to pay a ransom “fee” to get the files to work again. If your computer has been infected by the GANDCRAB V4 ransomware virus, we strongly suggest that you read this article and learn how you can remove this malware effectively and how you can try and recover as many .KRAB encrypted files as possible, without paying the ransom.

Threat Summary

Name	GANDCRAB V4
Type	Ransomware, Cryptovirus
Short Description	New version of GandCrab ransomware. Encrypts the files, making them unable to be opened and asks victims to pay ransom in the DASH cryptocurrency to get the files to work again.
Symptoms	The GANDCRAB V4 virus leaves the files with the .KRAB file extension and drops a ransom note, called KRAB-DECRYPT.txt.
Distribution Method	Spam Emails, Email Attachments, Executable files
Detection Tool	See If Your System Has Been Affected by GANDCRAB V4 Download Malware Removal Tool
User Experience	Join Our Forum to Discuss GANDCRAB V4.
Data Recovery Tool	Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

GandCrab Ransomware – Update December 2018

GandCrab ransomware has continued to evolve into a 5.0.9 version, which was discovered in the beginning of December 2018. More information about it can be found on the following related story:

403 Forbidden

www.sensorstechforum.com

Remove GANDCRAB v5.0.9 Cryptovirus

GANDCRAB V4 Virus – Update November 2018

The v4 release of the Gandcrab ransomware family has been found very effective against IoT devices. The exploit kit and attack configuration parameters used to infect the devices appear to target machines using weak or default account login credentials. Unfortunately many smart device owners do not adhere to the security practice of changing the passwords once they configure their devices. This is the reason why ransomware and malware attacks are very successful against this subset of victim devices.

Web servers and running services can be defaced — user data and content will be deleted and a ransomware note will be displayed. Furthermore through the compromised devices more attacks can be made, especially if they are recruited to a botnet.

GANDCRAB V4 Virus – Update August 2018

The GANDCRAB V4 Virus continues to spread in August, 2018. Malware researchers suspect that more countries might be getting affected as more languages have been added to the payment page of the ransomware. You can clearly see that from the below screenshot:

If more languages are being added, either the cybercriminals are going to spread their malware in more countries (by using malvertising campaigns, for example) or they know that those countries are already affected by the GANDCRAB V4 Virus.

GANDCRAB V4 Virus – How Does It Infect Victims

The infection process of the .KRAB iteration of this ransomware is rather similar to the infection procedure that was used in its older versions. The ransomware authors aim to use a malicious attachment, often a Microsoft Office document or a .PDF file, whose main goal is to trick users to enable Macros. Such documents often deceive users that, unless editing is not enabled, they cannot read what is in the documents. One such file was detected by researcher Marcelo Rivero to be a receipt in a PDF file which then leads to infecting the user with GANDCRAB V4. The infection chain occurs as it follows:

The e-mails carrying the ransomware are spreading the attachment in a .7z archive file with the same name as the PDF document inside, as researcher from malware-traffic-analysis Brad has discovered. The messages in the e-mails themselves aim to convince the user that the attachment is of utmost importance and should be opened immediately. Below, you can see one of the e-mails carrying a malicious GANDCRAB attachment:

From: Deanna Bennett <>
Subject: Payment Invoice #93611
Attachment: DOC402942349491-PDF.7Z
Dear Customer,
To read your document please open the attachment and reply as soon as possible.
Kind regards,
TCR Customer Support

Naturally, there are other subjects and other e-mails as well, since the cyber-criminals who are behind GANDCRAB V4 have likely created a lot of e-mail templates in order to avoid having their e-mail addresses flagged by the e-mail providers’ detection software. Here are some of the topics (subjects) you are likely to encounter in an e-mail, carrying GANDCRAB V4 ransomware virus:

Document #72170
Invoice #21613
Order #87884
Payment #72985
Payment Invoice #58058
Payment Invoice #93611
Ticket #07009
Your Document #78391
Your Order #16323
Your Ticket #23428

In addition to documents with malicious Macros, the GANDCRAB V4 ransomware may also infect you by simply clicking on the .7z file, since researchers have reported that the malware may self-extract a .JS (JavaScript) file with the same name which automatically starts the infection process:

GANDCRAB V4 Ransomware – Analysis

Once the malicious .JS file or the malicious macros that cause the infection with GANDCRAB V4 ransomware are executed, the ransomware virus begins its malicious activities. The .JS file drops an executable type of fil, which is often named randomly or resembles a legitimate Windows program. The location in which this file is dropped may be the the following:

→ C:\Users\{Your Username}\AppData\{malicious file name}.exe
HASH of the file: 97a910c50171124f2cd8cfc7a4f2fa4f

Then, the virus uses the “RunOnce” registry sub-key in which it adds the REG_SZ type of registry value. This is done with the purpose of getting the malicious file to run automatically on Windows boot. This procedure may result in the ransomware .exe running automatically on Windows login. The RunOnce subkeys in which you can find the value string have the following locations:

→ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

The GANDCRAB V4 ransomware also makes sure that the victim reads its ransom note file, which contains instructions how to download and install Tor browser to anonymously pay the ransom in the DASH cryptocurrency by going on the ransomware’s web page. The note is called by two names – CRAB-DECRYPT.txt or KRAB-DECRYPT.txt and has the following message for the victims to see:

–= GANDCRAB V4 =—
Attention!
All your files, documents, photos, databases and other important files are encrypted and have the extension: .KRAB
The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files.
The server with your key is in a closed network TOR. You can get there by the following ways:
—————————————————————————————-
| 0. Download Tor browser – https://www.torproject.org/
| 1. Install Tor browser
| 2. Open Tor Browser
| 3. Open link in TOR browser:
| 4. Follow the instructions on this page
—————————————————————————————-
On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free.
ATTENTION!
IN ORDER TO PREVENT DATA DAMAGE:
* DO NOT MODIFY ENCRYPTED FILES
* DO NOT CHANGE DATA BELOW
—BEGIN GANDCRAB KEY—
—END GANDCRAB KEY—
—BEGIN PC DATA—
—END PC DATA—

When the victim opens the web page in Tor browser, a similar web page to the other GANDCRAB variants is also seen with this version:

The web page also features a live chat and detailed instructions on how to pay the ransom to get the so-called GandCrab Decryptor:

GANDCRAB V4 Ransomware – Encryption Process

GANDCRAB ransomware uses a very sophisticated and well-developed encryption procedure which utilizes the combination of the following encryption algorithms:

AES-256 (Advanced Encryption Standard)
RSA-2048 (Rivest-Shamir-Adleman)

Both of the ciphers are respectively in the 256 bit and 2048 bit of strength, making them impossible to be decoded if you do not know the decryption keys. And to further complicate the situation, GANDCRAB V4 ransomware also encrypts the files in something known as CBC mode, or Cipher-Block Chaining mode. This mode chains up the encrypted files in a way that is tamper-proof. To best explain this, GANDCRAB V4 encrypts the files as it follows:

Step 1: The ransomware scans for the files it wants to encrypt (documents, videos, images, audio files, archives, etc.), while excluding files in Windows directories that may damage the functioning of your PC.
Step 2: GANDCRAB V4 encrypts the files by creating copies of the original files, which are with replaced blocks of data within them. The bad news is that the CBC mode links those blocks together and if the files are tampered with, the CBC mode breaks them indefinitely.
Step 3: After encryption, the ransomware generates a unique decryption key for each file; all files are likely linked in a KEY file, which is also encrypted, making it impossible to decrypt the files without the decryption key.
Step 4: GANDCRAB V4 ransomware adds the .KRAB file suffix to the encrypted copies of the files and deletes the original files. This makes the encrypted files to appear like the following:

Step 5: The virus likely triggers the following commands as an administrator in Windows Command Prompt:

→ sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

This is done with the purpose to delete the shadow volume copies of the infected machine, so that the user cannot restore the files, using Windows Recovery.

Remove GANDCRAB V4 Ransomware and Restore .KRAB Encrypted Files

Removing GANDCRAB V4 ransomware may be more complicated than it seems, since this ransomware virus may contain multiple defensive techniques that may damage your files and your computer indefinitely. One way to remove the ransomware manually is if you follow the manual removal instructions underneath this article and use the information to do the removal yourself. Keep in mind you must really know what you are doing, since you risk loosing your files indefinitely.

Another way to do the removal, which is often advised by security analysts, is to download and install an advanced anti-malware software. Such program will automatically scan for and remove all of the GANDCRAB V4-related virus files and make sure that the virus is safely removed from your computer.

If you want to restore your encrypted files, directly trying to decrypt them is not a good idea, unless there is an official decryptor available. Paying the ransom is one way to go with, but it is not advisable, mainly because you may not get your files after paying. By paying, you are also supporting the operation of the cyber-criminals as well. Thus, we suggest that you try out the alternative methods for file recovery underneath this article in step “2. Restore files, encrypted by GANDCRAB V4”. They have been created to help you try and restore the deleted original files by GANDCRAB V4 by using data recovery software to recover some or most of your files, depending on the condition of the deleted file. The methods are not 100% effective to recover your data, but their main goal is to help you to restore as many files as possible, as they have helped some of the users on our forums.

Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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GANDCRAB V4 may remain persistent on your system and may re-infect it. We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool. More about SpyHunter 5 and steps to uninstall. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.

Preparation before removing GANDCRAB V4.

Before starting the actual removal process, we recommend that you do the following preparation steps.

Make sure you have these instructions always open and in front of your eyes.
Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
Be patient as this could take a while.

Step 1: Boot Your PC In Safe Mode to isolate and remove GANDCRAB V4

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter’s malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R

2. The “Run” Window will appear. In it, type “msconfig” and click OK.

3. Go to the “Boot” tab. There select “Safe Boot”, tick “Network” and then click “Apply” and “OK”.

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on “Restart” to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Clean any registries, created by GANDCRAB V4 on your computer.

The usually targeted registries of Windows machines are the following:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by GANDCRAB V4 there. This can happen by following the steps underneath:

1. Open the Run Window again, type “regedit” and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.

Step 3: Find files created by GANDCRAB V4

For Windows 8, 8.1 and 10.

For Windows XP, Vista, and 7.

For Newer Windows Operating Systems

1: On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.

3: Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:

N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.

For Older Windows Operating Systems

In older Windows OS’s the conventional approach should be the effective one:

1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

IMPORTANT!
Before starting “Step 4”, please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for GANDCRAB V4 with SpyHunter Anti-Malware Tool

1. Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter’s EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.

4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Next’ button.

If any threats have been removed, it is highly recommended to restart your PC.

Step 5 (Optional): Try to Restore Files Encrypted by GANDCRAB V4.

Ransomware infections and GANDCRAB V4 aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

Stellar Data Recovery Technician Version

If the above link does not work for you and your region, try the ones below, that lead to the same product:

Stellar Data Recovery Technician Version (Secondary link)

and

Stellar Data Recovery Technician Version (with Registration)

or if you use Mac:

Stellar Data Recovery Mac

2. On the download page, click on the “Download” button:

3. Click on “Save File” button:

4. Accept all agreements and click “Next”:

5. After all the “Next” steps, click on “Install” and then wait for the installation to complete:

6. Run the software. Click on the location to scan for missing or deleted files and click on “Scan”:

7. Wait for the scan to complete, it may take some time. Be advised that this scan is not 100% guaranteed to recover all files, but it does have some chance to get your data back:

For more “how-to” file recovery methods and steps, you can visit our instructive article on “How to Restore Files Encrypted by Ransomware (Without Decrypter)“.

Ventsislav Krastev

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Preparation before removing GANDCRAB V4.

Before starting the actual removal process, we recommend that you do the following preparation steps.

Make sure you have these instructions always open and in front of your eyes.
Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
Be patient as this could take a while.

Step 1: Boot Your PC In Safe Mode to isolate and remove GANDCRAB V4

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

1. Hold Windows key() + R

2. The “Run” Window will appear. In it, type “msconfig” and click OK.

3. Go to the “Boot” tab. There select “Safe Boot” and then click “Apply” and “OK”.

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on “Restart” to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Clean any registries, created by GANDCRAB V4 on your computer.

The usually targeted registries of Windows machines are the following:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by GANDCRAB V4 there. This can happen by following the steps underneath:

1. Open the Run Window again, type “regedit” and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.

Step 3: Find files created by GANDCRAB V4

For Windows 8, 8.1 and 10.

For Windows XP, Vista, and 7.

For Newer Windows Operating Systems

1: On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.

For Older Windows Operating Systems

In older Windows OS’s the conventional approach should be the effective one:

1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

Step 4: Scan for GANDCRAB V4 with SpyHunter Anti-Malware Tool

1. Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.

If any threats have been removed, it is highly recommended to restart your PC.

Ventsislav Krastev

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Preparation before removing GANDCRAB V4.

Before starting the actual removal process, we recommend that you do the following preparation steps.

Make sure you have these instructions always open and in front of your eyes.
Be patient as this could take a while.

Step 1: Uninstall GANDCRAB V4 and related software from Windows

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

1. Hold the Windows Logo Button and “R” on your keyboard. A Pop-up window will appear.

2. In the field type in “appwiz.cpl” and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press “Uninstall”

Follow the instructions above and you will successfully uninstall most programs.

Step 2: Clean your Browsers from GANDCRAB V4.

Remove an extension from Mozilla Firefox

Remove an extension from Google Chrome

Remove an extension from Internet Explorer

Remove an extension from Microsoft Edge

1. Start Mozilla Firefox. Open the menu window

2. Select the “Add-ons” icon from the menu.

3. Select the unwanted extension and click “Remove“

4. After the extension is removed, restart Mozilla Firefox by closing it from the red “X” button at the top right corner and start it again.

1. Start Google Chrome and open the drop menu

2. Move the cursor over “Tools” and then from the extended menu choose “Extensions“

3. From the opened “Extensions” menu locate the unwanted extension and click on its “Remove” button.

4. After the extension is removed, restart Google Chrome by closing it from the red “X” button at the top right corner and start it again.

1. Start Internet Explorer:
2. Click on the gear icon labeled ‘Tools’ to open the drop menu and select ‘Manage Add-ons’

3. In the ‘Manage Add-ons’ window.

4. Select the extension you want to remove and then click ‘Disable’. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click ‘Disable’.

5. After the unwanted extension has been removed, restart Internet Explorer by closing it from the red ‘X’ button located at the top right corner and start it again.

1. Start Edge

2. Open the drop menu by clicking on the icon at the top right corner.

3. From the drop menu select “Extensions”.

4. Choose the suspected malicious extension you want to remove and then click on the gear icon.

5. Remove the malicious extension by scrolling down and then clicking on Uninstall.

Step 3: Clean any registries, created by GANDCRAB V4 on your computer.

The usually targeted registries of Windows machines are the following:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by GANDCRAB V4 there. This can happen by following the steps underneath:

1. Open the Run Window again, type “regedit” and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click “Modify” to see which file it is set to run. If this is the virus file location, remove the value.

Step 4: Scan for GANDCRAB V4 with SpyHunter Anti-Malware Tool

1. Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the ‘Malware/PC Scan’ tab. A new window will appear. Click on ‘Start Scan’.

If any threats have been removed, it is highly recommended to restart your PC.

Ventsislav Krastev

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with Combo Cleaner

GANDCRAB V4 may remain persistent on your system and may re-infect it. We recommend you to download Combo Cleaner and run free scan to remove all virus files on your Mac. This saves you hours of time and effort compared to doing the removal yourself.

Combo Cleaner’s scanner is free but the paid version is needed to remove the malware threats. Read Combo Cleaner’s EULA and Privacy Policy

Preparation Phase:

Before starting to follow the steps below, be advised that you should first do the following preparations:

Backup your files in case the worst happens.
Make sure to have a device with these instructions on standy.
Arm yourself with patience.

Step 1: Uninstall GANDCRAB V4 and remove related files and objects

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your Mac with Combo Cleaner

Keep in mind, that Combo Cleaner needs to purchased to remove the malware threats. Click on the corresponding links to check Combo Cleaner’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to GANDCRAB V4:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the “Go” button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to GANDCRAB V4. If you find it, right-click on the app and select “Move to Trash”.

6. Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to GANDCRAB V4. Check the app you want to stop from running automatically and then select on the Minus (“–“) icon to hide it.

7. Remove any left-over files that might be related to this threat manually by following the sub-steps below:

Go to Finder.
In the search bar type the name of the app that you want to remove.
Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove GANDCRAB V4 via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1. Click on “Go” and Then “Go to Folder” as shown underneath:

2. Type in “/Library/LauchAgents/” and click Ok:

3. Delete all of the virus files that have similar or the same name as GANDCRAB V4. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Step 2: Remove GANDCRAB V4 – related extensions from Safari / Chrome / Firefox

Remove an extension from Safari and reset it.

Remove a toolbar from Google Chrome

Remove a toolbar from Mozilla Firefox

1. Start Safari

2. After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

3. From the menu, click on “Preferences“

4. After that, select the ‘Extensions’ Tab

5. Click once on the extension you want to remove.

6. Click ‘Uninstall’

A pop-up window will appear asking for confirmation to uninstall the extension. Select ‘Uninstall’ again, and the GANDCRAB V4 will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

1. Start Google Chrome and open the drop menu

2. Move the cursor over “Tools” and then from the extended menu choose “Extensions“

3. From the opened “Extensions” menu locate the add-on and click on the garbage bin icon on the right of it.

4. After the extension is removed, restart Google Chrome by closing it from the red “X” in the top right corner and start it again.

1. Start Mozilla Firefox. Open the menu window

2. Select the “Add-ons” icon from the menu.

3. Select the Extension and click “Remove“

4. After the extension is removed, restart Mozilla Firefox by closing it from the red “X” in the top right corner and start it again.

Step 3: Scan for and remove GANDCRAB V4 files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as GANDCRAB V4, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

Download

Combo Cleaner

Ventsislav Krastev

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4 Comments

Lynne July 4, 2018 at 9:51 am
I have a battery symbol in the top right corner of my phone. It is not the life of the battery it has what looks like 3 triangles in it. It appeared about a week ago. Please can you help.
Reply ↓
anonimo August 21, 2018 at 9:48 pm

es el ahorro de datos, saludos

Reply ↓
Mohammad Yari August 29, 2018 at 2:02 pm
My files are encrypted by gandcrab’s ransomware and there is currently no way to access my data. Dear custodians, I ask you to help in solving this problem. If I can not retrieve my elephants, I might lose my job. That’s why I ask for help from all of you.
Reply ↓
ricardo September 20, 2018 at 9:34 pm
meus amigos estou numa sinuca de bico, é isso mesmo, meus arquivos estão tds criptografados .krab e tenho um studio com trabalhos de clientes diversos e não consigo acessar mais nada e estou aqui a ponto de enlouquecer pq já procurei em tds os locais que era possivel na internet e não existe uma forma de resolver isso, se estiver alguém que possa me ajudar ficarei muito agradecido com isso,
se aguém puder ajudar agradeço desde já…
[SensorsTechForum: comment has been edited, personal information was removed from it]
Reply ↓

Ventsislav Krastev

Ventsislav Krastev

GANDCRAB V4 Ransomware – Remove and Restore .KRAB Encrypted Files

Threat Summary

GandCrab Ransomware – Update December 2018

GANDCRAB V4 Virus – Update November 2018

GANDCRAB V4 Virus – Update August 2018

GANDCRAB V4 Virus – How Does It Infect Victims

GANDCRAB V4 Ransomware – Analysis

GANDCRAB V4 Ransomware – Encryption Process

Remove GANDCRAB V4 Ransomware and Restore .KRAB Encrypted Files

Ventsislav Krastev

Ventsislav Krastev

Ventsislav Krastev

Ventsislav Krastev

Ventsislav Krastev

Ventsislav Krastev

Ventsislav Krastev

4 Comments

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