.krab Files Virus (GANDCRAB V4.1) – How to Remove + Restore Data

.krab Files Virus (GANDCRAB V4.1) – How to Remove + Restore Data

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This article has been made with the goal of explain what is the updated GandCrab v4.1 ransomware version and how to remove it from your computer plus how you can restore files, encrypted with the .krab file extensions.

An updated version of the recently released version 4 of the GandCrab ransomware menace has been detected by security researchers. The ransomware encrypts the files, adding the .krab file extension with small letters unlike it’s previous v4 variant which used capital letters of the same suffix. The ransomware still uses the very same strong encryption algorithm and after encoding the files, the virus ads the krab-decrypt.txt ransom note to the encoded files. What is particularly interesting about the malicious file of this ransomware is that it uses an .exe file for it’s infection to take place. More information, removal and recovery of files, encrypted by this GandCrab v4.1 version is available in our research article underneath.

Threat Summary

NameGandCrab v4.1
TypeRansomware, Cryptovirus
Short DescriptionVersion 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.
SymptomsThe GANDCRAB V4.1 virus leaves the files with the .krab file extension and drops a ransom note, called krab-decrypt.txt.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by GandCrab v4.1


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss GandCrab v4.1.
Data Recovery ToolWindows 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 – Update October 2018 – Free Decryption is Now Available

Researchers have successfully made a breakthrough with GandCrab ransomware and have developed a decryption tool for all versions of GandCrab ransomware. Following these developments, we have published instructions on how to decrypt GandCrab encrypted files for free, which you can find in the related article below:

Related: GandCrab Ransomware – Decryption Instructions

GandCrab v4.1 .krab Ransomware – Information Database:

GandCrab v4.1 (.krab) Ransomware – How Does It Infect
GandCrab V4.1 (.krab) Virus – Activity Report
GandCrab v4.1 – Encryption Report

How to Remove GandCrab V4.1 Ransomware and Try to Restore .krab Files

GandCrab v4.1 ransomware is not one of those threats that you should underestimate if you want to remove it. For maximum effectiveness of the removal process of this ransomware, it is strongly recommended that you follow either the manual or automatic removal process underneath. But be careful and follow the manual removal only if you have some malware removal experience. Other than that, as security experts often advise, it is recommended that you download an advanced anti-malware program which will take care of the removal of GandCrab v4.1 for you automatically plus ensure that your PC remains protected in the future as well.

Be advised that if you want to try and restore your encrypted files, we have prepared some theoretical alternatives below in step “2. Restore files, encrypted by GandCrab v4.1” underneath. They may not work at a 100% effectiveness but might be able to help you recover at least some of your encrypted files, which is still better than paying ransom to cyber-criminals.


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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