GandCrab Ransomware
Ransomware | 03/12/2019

Remove GandCrab Ransomware From Your System – Malware Removal Guidelines

About: GandCrab Ransomware is the new king of malware world as it easily adapts to the modern cyber-security environment. The developers are making continuous improvements & launching newer versions of ransomware. Refer to our detailed guide given ...  Read More  

| Ransomware | Remove GandCrab Ransomware From Your System – Malware Removal Guidelines

Guide to Remove GandCrab Ransomware

The treacherous porn extortion malware, GandCrab Ransomware that saw phenomenal success last year is back & vigorous than ever!


The developers of GandCrab are working strenuously & launching newer versions of this ransomware so as not to lose their hard-won share in the world of malware. GandCrab Ransomware currently holds an incredible 40% share of the whole ransomware market. Cyber-criminals behind GandCrab who are propagating & distributing ransomware are staying updated & opting for creative, ingenious & even romantic tactics to infect systems & swindle innocent users.

GandCrab Temp1

The blackmail scheme implemented by GandCrab Ransomware reads as “We hijacked your webcam & nailed you watching porn. We have encrypted your data & now we want ransom.”

Newer Version of GandCrab Ransomware is for Sentimental- Spread Techniques & Threat Behavior

Researchers have revealed that the most common variant of the malicious e-mails distributed by the fraudsters have a romantic phase in the subject line. Some of the captivating subject lines used by the distributers include My love letter to you, Wrote my thoughts down about you & Fell in love with you.


It is evident that subject lines with love declarations sound appealing; however they actually bear the tidings of possible disaster to user’s system & sensitive information. The consequences are that such messages do not raise alarms & work stealthily, rendering user unaware of its deceptive intentions.

Ransom note

Users from across the world are receiving e-mails with romantic phase in the subject line, a symbol of heart in e-mail body & an attached ZIP file named Love_You followed by certain digits. A mere click on ZIP file triggers the JavaScript file that is concealed in & resulting in the download of GandCrab Ransomware.


This accidental & unintentional download of extortion scam ransomware will eventually end up in the encryption of critical data & files of users. Following the encryption, users will be redirected to a message explaining that all the files in your system have been encoded & can only be restored by paying a ransom in bitcoin(s). In case users are not acquainted with Cryptocurrencies, the fraudsters that master-mined the scam attack provides a live chat window for novices to teach them how to purchase ransom amount & pay it.

Ransomware Targeting Businesses & IT Firms

A tool used to synchronize data between the management systems for IT companies was reported to have a security flaw. This defect led to the invention of a patch in 2017 to fix the vulnerability. However, not everyone owning the tool installed that patch in 2017. Consequently, GandCrab Ransomware is now targeting all those who didn’t install the patch & encrypting all their sensitive data.


The security flaw is paving a way for the cyber criminals to create new administrator accounts & trigger commands to install pernicious ransomware at the end-points.

Similar Spreading Techniques

Ransomware for Payers

Many e-mail attachments are luring & hackers are continuously exploiting the opportunity of sending malicious e-mails that bear resemblance to an invoice, a payment confirmation or notice. These e-mails contain a link that downloads a ZIP, a RAR or an excel file from WeTransfer. The files are protected by a password that is mentioned in the mail. Any attempt to open these attachments will deploy the Gandcrab Ransomware once executed.

Ransomware Targeting Italians

Another hilarious & brand-new method adopted by the cyber criminals is the use of an alluring “payment notice” in the form of an Excel document. An attempt to access the file will display a dialog telling that you can’t view the file online & further suggests you to click “Enable Edit” & “Enable Content”.


Surprisingly, this specific attack is targeting Italians exclusively. Enabling Edit & Content will activate a script that checks if your system is based in Italy.


If the system is Italy-based, you will get to experience developer’s sense of humor. The image of Mario containing malicious PowerShell code covers the screen & a mere click on the image to view the file contents will download the malware.

Other Distribution Techniques of GandCrab Ransomware

The cybercriminals use various strategies for malware distribution which include –

  1. Software Bundling: Software bundling is the process in which a malicious program is distributed with other free software, to get an unnoticed entry into your computer system. When a user installs a free application, the malicious programs gains a front door entry with the free application, the user has downloaded. Thus, it is a good idea to keep an eye on the installation screens while installing these free applications.
  2. Infected Storage Devices: Your system can also get infected by using removable media such as USB hard drives and jump drives without scanning them with an anti-virus.
  3. Spam Emails – Spamming is the most economic and common method used for the distribution of such malware. The targeted users get genuine looking emails which contain .doc, .txt, and other similar attachments. These attachments can be named as anything which can grab the user’s attention and triggers him/her to open the attachment. As soon as the user opens this attachment, the malware infects the user’s computer system.
  4. Malicious Websites or Malevolent Advertisements: The malicious websites are the ones which are created just for promoting the malware infections. Such websites include but are not limited to porn sites, torrent sites and other free downloading platforms. By visiting such websites, the adware infects the user’s computer without permission. Fake advertisements and updates like Flash player and windows updates which ask the user to update to the latest version are a few examples. When the users click on such links, their computer system gets infected. That is why, it is highly recommended to resist clicking on such links. Also avoid clicking on advertisements offering free stuff such as Win an iPhones, cars or free overseas trips etc.

Threat Summary

Name: GandCrab

Targeted Operating System: Windows

Category: Ransomware

Symptoms: User’s files are encrypted. All encrypted files are appended with .gdcb, .crab, .krab, .KRAB, .lock,.[random_characters] extension & a pop-up window asking users to make a ransom [in bitcoin(s)] appears.

How to avoid GandCrab Ransomware infiltration in the System?

STEP A: Remove the services installed by GandCrab Ransomware from the System using Safe mode with Command Prompt

Windows 7/ Vista/ XP

  1. Click on Windows icon present in the lower left corner of the computer screen.
  2. Select and click Restart.
  3. When the screen goes blank, keep tapping F8 key until you see the Advanced Boot Options window.
  4. With the help of arrow keys on keyboard, Select Safe Mode with Command Prompt from the list and press the Enter Key. The system will then restart to Safe Mode with Command Prompt.
  5. Click on the username and enter the password (if any).

Windows 10 / Windows 8

  1. Press and hold the Shift Key and simultaneously click on the windows icon present in the lower left corner of your computer screen.
  2. While the Shift key is still pressed click on the Power button and then click on Restart.
  3. Now select Troubleshoot → Advanced options → Startup Settings.
  4. When the Startup Settings screen appears which is the first screen to appear after restart, select and click on Enable Safe Mode with Command Prompt. The system will then restart to Safe Mode with Command Prompt.
  5. Click on the username and enter the password.

STEP B: Restore your System Files and Settings

Method 1 using Control Panel

  1. Click on the ‘Start’ button on the taskbar. This will open the Start menu.
  2. Click on the ‘Control Panel’ button in the Start menu. This will open the control panel window.
  3. In the Control Panel window, click on the ‘View by:’ button on the top right. Select the Large Icon option
  4. In the control Panel window click on the ‘Recovery Icon’. This will open a window that will ask ‘Restore the computer to an earlier point in time’.
  5. Click on the ‘Open system restore’ button. This will open the ‘system restore ’window where you need to click on the Next Button.
  6.  Select the restore point that is prior the infiltration of GandCrab Ransomware. After doing that, click Next.
  7. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by GandCrab Ransomware.


Method 2 using Command Prompt

  1. Type cmd in the search box and click on the command prompt to open the Command Prompt window. box and clicking on it.
  2. Once the Command Prompt window shows up, enter cd restore and click Enter.(Ensure that you in the system32 directory of Windows folder in C Drive)
  3. Now type rstrui and press Enter again.
  4. When a new window shows up, click Next and select your restore point that is prior the infiltration ofGandCrab Ransomware. After doing that, click Next.
  5. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by GandCrab Ransomware.



Method 3 : Directly type 'rstrui' in the search box

  1. Type ‘Rstrui’ in the search box present on the task bar. This will open the System restore dialog box.

Continue to follow steps 4 & 5 of Method 2 to restore the System Files and settings.

Tips to prevent your computer system from getting infected

  1. Keeping the Operating System Updated- In order to remain protected and avoid such infections, it is recommended to keep your Operating System updated by enabling the automatic update on your system. The systems with outdated or older versions of Operating System become an easy target for the attackers.
  2. Resist clicking on spam emails – One of the major techniques used for malware distribution is forwarding spam emails to the user. The system gets infected as soon as the user clicks on the attachment. These mails appear to be genuine, so be aware and resist falling for these tricks.
  3. Keep an eye on third party installations- It is quite important that you take due care while installing any third party applications for they are major source of such infections. Such malware programs come bundled with the free applications thereby requiring the user to remain cautious.
  4. Regular periodical backup- In order to keep your data and files safe, it is recommended to take regular back up of all your data and files either on an external drive or cloud.
  5. Use Anti-Virus Protection- We strongly recommend the use of antivirus protection/internet security in your PC like Sophos and Vipre so that it remains safe.
  6. Enable the Ad Blocker/Popup Blocker in your browser- Enabling the popup blocker/ ad blocker in your chosen browser will help you to stay protected from annoying adware.

Hits: 224

Leave a Reply

Your email address will not be published. Required fields are marked *

Did you find the article informative? Yes NO

Get Regular Updates Related to All the Threats

Want to stay informed about the latest threats & malware? Sign up for our newsletter & learn how to get rid of all types of threats from your computer.

Virus Removal Guidelines
Plot No 319, Nandpuri- B Pratap Nagar
Rajasthan 302033
Phone: +91 9799661866