GANDCRAB 5.2 Ransomware

Also Known As: GANDCRAB 5.2 virus
Distribution: Moderate
Damage level: Severe

GANDCRAB 5.2 ransomware removal instructions

What is GANDCRAB 5.2?

GANDCRAB 5.2 is ransomware-type program used by developers (cyber criminals) to encrypt data stored on victims' computers and to keep it in that state until a ransom is paid. This program creates a ransom message and generates a random name for it. For example, "DSEWRBG-DECRYPT.txt". GANDCRAB 5.2 does the same with the extension, which it adds to each encrypted file. For example, "1.jpg" becomes "1.jpg.dsewrbg". It also changes the victim's desktop wallpaper. GANDCRAB 5.2 is one of many variants of GANDCRAB ransomware.

In the "DSEWRBG-DECRYPT.txt" ransom message (its name can vary), cyber criminals urge victims not to delete this text file until the data is recovered (decrypted). They state that deleting it might cause decryption errors. They claim that the only way to decrypt data is to purchase a decryption key from them. To proceed with data decryption, GANDCRAB 5.2 victims are encouraged to download and install the TOR browser and then to open the link provided in the ransom message. The website contains a deadline that, unless met, will double the cost of decryption. Therefore, if the initial cost of a decryption key is $1200, after a certain period of time has elapsed, it will increase to $2400. To make payment, victims must use the DASH or Bitcoin cryptocurrencies and transfer it by clicking a link that leads to a cryptocurrency wallet address. Before making payment, these cyber criminals offer free decryption of one file. This is common to ransomware developers who offer this 'proof' that they are capable of providing tools or keys required for successful data decryption. Recently, a malware security company called Bitdefender released a decryption tool that is capable of restoring files that were encrypted by various versions of GANDCRAB ransomware. Therefore, we highly recommend to try restoring data using Bitdefender's tool. Most cyber criminals use cryptography algorithms (symmetric or asymmetric) that make decryptions without using a specific tool impossible. Unfortunately, only ransomware developers have these tools. If a computer is infected with a ransomware that is undecryptable (there are no tools like the one developed by Bitdefender), the only free way to recover data is to use a backup and restore everything from there.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

GANDCRAB 5.2 decrypt instructions

Many cyber criminals develop ransomware-type programs, however, most are very similar. GANDCRAB 5.2 shares similarities with many other malicious programs of this type such as Shadi, Cammora, and Heets. Most of these infections encrypt data and keep it in this state until the ransom is paid or decryption tool is purchased. Main differences are usually cost of tool and cryptography algorithm used to encrypt data. Encrypted files can be decrypted only if the ransomware is not fully developed, contains bugs/flaws, and so on. Therefore, we recommend that you maintain regular backups and keep them on remote servers or unplugged storage devices. These backups are then protected from being encrypted with other data.

How did ransomware infect my computer?

The exact method that cyber criminals use to proliferate GANDCRAB 5.2 ransomware is unknown, however, most programs of this type are proliferated using spam (email) campaigns, Trojans, fake software updaters, untrustworthy software download channels/tools or software cracking tools. Spam campaigns are used to proliferate infections via attached malicious files. Typically, these attachments are Microsoft Office documents, archive files (ZIP, RAR and other), PDFs, executable (.exe), JavaScript, and other files. Once opened/executed, these attachments download and install computer infections such as ransomware or other high-risk malware. Trojans are malicious programs that must already be installed. They then cause chain infections by downloading and installing other malicious programs. Fake software updaters usually infect computers/operating systems by downloading and installing malware rather than the expected updates or by exploiting bugs/flaws of outdated software. Freeware download, free file hosting websites, Peer-to-Peer networks (torrent clients, eMule, and so on) and other dubious/dubious software download sources are also used by cyber criminals to distribute computer infections. They present malicious files (or various rogue apps) as legitimate. By downloading and installing them, people cause computer infections. Software cracking tools also cause problems. They are used to activate paid software/operating systems free of charge, however, cyber criminals proliferate activation tools that install malicious programs.

Threat Summary:
Name GANDCRAB 5.2 virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .[random_string] (e.g., ".dsewrbg")
Ransom Demanding Message [RANDOM_STRING]-DECRYPT.txt (e.g., "DSEWRBG-DECRYPT.txt") text file, desktop wallpaper, Tor website
Ransom Amount $1200/$2400
Cyber Criminal Contact Tor website (gandcrabmfe6mnef[.]onion/113737081e857d00)
Detection Names (H.exe)
Avast (Win32:Malware-gen), BitDefender (Trojan.GenericKD.31823469), ESET-NOD32 (a variant of Win32/Kryptik.GRGO), Kaspersky (Trojan-Ransom.Win32.Crypmod.abvs), Full List Of Detections (VirusTotal)
Symptoms Can't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password stealing trojans and malware infections can be installed together with a ransomware infection.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
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How to protect yourself from ransomware infections?

Think twice before opening attachments or web links that are presented in emails received from unknown/suspicious addresses. If the email is irrelevant or contains an attachment, do not open it, at least not without making sure it is safe. Download all software using direct links, trustworthy and official sources/websites. Do not use third party downloaders or installers. It is possible that these sources could be used to distribute rogue applications that might infect computers or cause other problems. Update the installed software using tools or implemented functions that are provided by official software developers and not third party updaters. Have a reputable anti-virus/anti-spyware software installed and enabled at all times. If your computer is already infected with GANDCRAB 5.2, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in GANDCRAB 5.2 ransomware text file (in this case, the "DSEWRBG-DECRYPT.txt"):

---= GANDCRAB V5.2 =---
******************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*******************
*****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS*****
Attention!
All your files, documents, photos, databases and other important files are encrypted and have the extension: .DSEWRBG
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 - hxxps://www.torproject.org/

| 1. Install Tor browser
| 2. Open Tor Browser
| 3. Open link in TOR browser: hxxp://gandcrabmfe6mnef.onion/113737081e857d00
| 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---

Screenshot of GANDCRAB 5.2 desktop wallpaper:

GANDCRAB 5.2 wallpaper

Screenshot of GANDCRAB 5.2 website:

GANDCRAB 5.2 website

Text presented on this website:

If the payment isn't made until 1/18/2019, 11:11:06 AM, the cost of decrypting files will be doubled
Countdown to double price: Time is up. Price is doubled!
What's the matter?
Your computer has been infected with GandCrab Ransomware.
All your files have been encrypted and you are not able to decrypt it by yourself.

To decrypt your files you have to buy GandCrab decryptor
The price is - 2400 USD
What can I do to get my files back?
You should buy our software GandCrab Decryptor. It will scan your PC, network share, all connected devices and check for encrypted files and decrypt it. Current price: 2400 USD. We accept cryptocurrency DASH and Bitcoin
What guarantees can you give me?
To be sure we have the decryptor and it works you can use free decrypt and decrypt one file for free.
But this file must be an image, because images usually are not valuable.
I don't have Bitcoin (BTC) or DASH (DSH). How can I make the payment?
Easy. The list of the most popular exchange services:
BuyBitcoin
CoinMonitor.io
LocalBitcoins
CoinMama
Changelly.com
PAYEER
CEX.IO

The full list of exchange services for Bitcoin here and for DASH here.
Create an account
Charge the balance with a credit card or paypal
Buy requested amount of coins (Bitcoin or DASH)
Make withdrawal to our address

Attention
Don't delete file *-DECRYPT.txt before full restore of your PC.

Screenshot of files encrypted by GANDCRAB 5.2 (in this case, the ".dsewrbg" extension):

Files encrypted by GANDCRAB 5.2

As mentioned above, Bitdefender has recently released a decryption tool capable of restoring data encrypted by GandCrab V1, V4, and all V5 versions (up to 5.2). Therefore, victims can decrypt their data easily without paying cyber criminals. You can find more information in this article and you can download the decryptor by clicking this link.

Screenshot of Bitdefender GandCrab decryptor:

GandCrab ransomware decryption tool by Bitdefender

GANDCRAB 5.2 ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Isolating the infected device:

Some ransomware-type infections are designed to encrypt files within external storage devices, infect them, and even spread throughout the entire local network. For this reason, it is very important to isolate the infected device (computer) as soon as possible.

Step 1: Disconnect from the internet.

The easiest way to disconnect a computer from the internet is to unplug the Ethernet cable from the motherboard, however, some devices are connected via a wireless network and for some users (especially those who are not particularly tech-savvy), disconnecting cables may seem troublesome. Therefore, you can also disconnect the system manually via Control Panel:

  • Navigate to the "Control Panel", click the search bar in the upper-right corner of the screen, enter "Network and Sharing Center" and select search result:

Disconnecting computer from the Internet (step 1)

  • Click the "Change adapter settings" option in the upper-left corner of the window:

Disconnecting computer from the Internet (step 2)

  • Right-click on each connection point and select "Disable". Once disabled, the system will no longer be connected to the internet. To re-enable the connection points, simply right-click again and select "Enable".

Disconnecting computer from the Internet (step 3)

Step 2: Unplug all storage devices.

As mentioned above, ransomware might encrypt data and infiltrate all storage devices that are connected to the computer. For this reason, all external storage devices (flash drives, portable hard drives, etc.) should be disconnected immediately, however, we strongly advise you to eject each device before disconnecting to prevent data corruption:

  • Navigate to "My Computer", right-click on each connected device and select "Eject":

Ejecting external storage devices

Step 3: Log-out of cloud storage accounts.

Some ransomware-type might be able to hijack software that handles data stored within "the Cloud". Therefore, the data could be corrupted/encrypted. For this reason, you should log-out of all cloud storage accounts within browsers and other related software. You should also consider temporarily uninstalling the cloud-management software until the infection is completely removed.

Identify the ransomware infection:

To properly handle an infection, one must first identify it. Some ransomware infections use ransom-demand messages as an introduction (see the WALDO ransomware text file below).

Identify ransomware-type infection (step 1)

This, however, is rare. In most cases, ransomware infections deliver more direct messages simply stating that data is encrypted and that victims must pay some sort of ransom. Note that ransomware-type infections typically generate messages with different file names (for example, "_readme.txt", "READ-ME.txt", "DECRYPTION_INSTRUCTIONS.txt", "DECRYPT_FILES.html", etc.). Therefore, using the name of a ransom message may seem like a good way to identify the infection. The problem is that most of these names are generic and some infections use the same names, even though the delivered messages are different and the infections themselves are unrelated. Therefore, using the message filename alone can be ineffective and even lead to permanent data loss (for example, by attempting to decrypt data using tools designed for different ransomware infections, users are likely to end up permanently damaging files and decryption will no longer be possible even with the correct tool).

Another way to identify a ransomware infection is to check the file extension, which is appended to each encrypted file. Ransomware infections are often named by the extensions they append (see files encrypted by Qewe ransomware below).

Identify ransomware-type infection (step 2)

This method is only effective, however, when the appended extension is unique - many ransomware infections append a generic extension (for example, ".encrypted", ".enc", ".crypted", ".locked", etc.). In these cases, identifying ransomware by its appended extension becomes impossible.

One of the easiest and quickest ways to identify a ransomware infection is to use the ID Ransomware website. This service supports most existing ransomware infections. Victims simply upload a ransom message and/or one encrypted file (we advise you to upload both if possible).

Identify ransomware-type infection (step 3)

The ransomware will be identified within seconds and you will be provided with various details, such as the name of the malware family to which the infection belongs, whether it is decryptable, and so on.

Example 1 (Qewe [Stop/Djvu] ransomware):

Identify ransomware-type infection (step 4)

Example 2 (.iso [Phobos] ransomware):

Identify ransomware-type infection (step 5)

If your data happens to be encrypted by a ransomware that is not supported by ID Ransomware, you can always try searching the internet by using certain keywords (for example, ransom message title, file extension, provided contact emails, cryptowallet addresses, etc.).

Search for ransomware decryption tools:

Encryption algorithms used by most ransomware-type infections are extremely sophisticated and, if the encryption is performed properly, only the developer is capable of restoring data. This is because decryption requires a specific key, which is generated during the encryption. Restoring data without the key is impossible. In most cases, cyber criminals store keys on a remote server, rather than using the infected machine as a host. Dharma (CrySis), Phobos, and other families of high-end ransomware infections are virtually flawless, and thus restoring data encrypted without the developers' involvement is simply impossible. Despite this, there are dozens of ransomware-type infections that are poorly developed and contain a number of flaws (for example, the use of identical encryption/decryption keys for each victim, keys stored locally, etc.). Therefore, always check for available decryption tools for any ransomware that infiltrates your computer.

Finding the correct decryption tool on the internet can be very frustrating. For this reason, we recommend that you use the No More Ransom Project and this is where identifying the ransomware infection is useful. The No More Ransom Project website contains a "Decryption Tools" section with a search bar. Enter the name of the identified ransomware, and all available decryptors (if there are any) will be listed.

Searching for ransomware decryption tools in nomoreransom.org website

Restore files with data recovery tools:

Depending on the situation (quality of ransomware infection, type of encryption algorithm used, etc.), restoring data with certain third-party tools might be possible. Therefore, we advise you to use EaseUS Data Recovery Wizard Pro. This tool supports over a thousand data types (graphics, video, audio, documents, etc.) and it is very intuitive (little knowledge is necessary to recover data).

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EaseUS Data Recovery Wizard Pro

By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Trial version of EaseUS Data Recovery Wizard Pro is capable of scanning drives and listing recoverable files - to restore them, you must purchase a license.

Step 1: Perform a scan.

  • Hover your mouse over the partition you wish to scan and select "Scan". You can also select a specific folder, or click shortcut icons to scan the Desktop or Recycle Bin:

Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 1)

  • Wait for EaseUS Data Recovery Wizard Pro to complete the scan. The scanning duration depends on the volume of files (both in quantity and size) that you are scanning (for example, several hundreds gigabytes could take over an hour to scan). Therefore, be patient during the scanning process. We also advise against modifying or deleting existing files, since this might interfere with the scan. If you add additional data (for example, downloading files/content) while scanning, this will prolong the process:

Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 2)

Step 2: Recover data.

  • Once the process is complete, select the folders/files you wish to restore and simply click "Recover". Note that some free space on your storage drive is necessary to restore data. Note also that the trial version of EaseUS Data Recovery Wizard Pro is only capable of scanning drives and listing recoverable files - to restore them, you must purchase a license:

Recovering data with EaseUS Data Recovery Wizard Pro

Step 3: Save the scan session (optional).

  • We recommend that you save the scanning session once you have completed recovery, in case you decide to recover additional files later. Simply click the "Save Scan Session" icon in the upper-right corner of the screen and choose the location for the file to be saved. This will save a lot of time, since you will not need to re-scan the storage drive the next time you wish to restore something. Bear in mind, however, that data removed after the scanning session has finished will not be listed:

Saving scan session in EaseUS Data Recovery Wizard Pro

Create data backups:

Proper file management and creating backups is essential for data security. Therefore, always be very careful and think ahead.

Partition management: We recommend that you store your data in multiple partitions and avoid storing important files within the partition that contains the entire operating system. If you fall into a situation whereby you cannot boot the system and are forced to format the disk on which the operating system is installed (in most cases, this is where malware infections hide), you will lose all data stored within that drive. This is the advantage of having multiple partitions: if you have the entire storage device assigned to a single partition, you will be forced to delete everything, however, creating multiple partitions and allocating the data properly allows you to prevent such problems. You can easily format a single partition without affecting the others - therefore, one will be cleaned and the others will remain untouched, and your data will be saved. Managing partitions is quite simple and you can find all necessary information on Microsoft's documentation web page.

Data backups: The most reliable backup method is to use an external storage device and keep it unplugged. Copy your data to an external hard drive, flash (thumb) drive, SSD, HDD, or any other storage device, unplug it and store it in a dry place away from sun and extreme temperatures. This method is, however, quite inefficient, since data backups and updates need to be made regularly. You can also use a cloud service or remote server. Here, an internet connection is required and there is always the chance of a security breach. Therefore, you should consider using an application to create data backups locally.

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EaseUS Todo Backup

By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for EaseUS Todo Backup. 30 days free trial available.

We recommend using the EaseUS Todo Backup application. The "Home" edition of EaseUS Todo Backup is usually more than adequate for regular users, however, the "Business" edition is more suitable for companies and large computer networks. The EaseUS Todo Backup application provides extensive data protection features. You can easily create backups, and encrypt and compress them for enhanced protection and storage saving purposes. It also allows you to set backup schedules, create bootable devices, and restore the system if a crash occurs. You can easily choose where to store the created backup: locally; uploaded to an external drive; FTP; cloud storage, or elsewhere. In summary, EaseUS Todo Backup is an all-in-one tool, which provides all features required to properly backup your data.

Creating a data backup:

The backup process is virtually identical regardless of the item (file, partition, entire system) you wish to backup. Taking the File Backup feature as an example:

Step 1: Choose which item to backup.

  • Click on the "Menu" icon in the upper-left corner of the screen to reveal the menu and select "File Backup":

Creating data backups with EaseUS Todo Backup tool (step 1)

  • Select the files you want to backup. You can also enter a name and description of the backup that will be created:

Creating data backups with EaseUS Todo Backup tool (step 2)

Step 2: Change the default settings.

The EaseUS Todo Backup application provides a variety of additional options that can be added/modified while creating the backup. For example, you can encrypt data (add a password), select the compression rate (how much the backup should be compressed), performance (how many system resources should be allocated), add an email notification (you receive an email once the process is complete) and so on.

  • To open the options window, click the "Backup options" button in the lower-left corner of the screen:

Creating data backups with EaseUS Todo Backup tool (step 3)

  • Select the settings you want to change and click "Save". You can also reset your changes by clicking "Reset to initial settings":

Creating data backups with EaseUS Todo Backup tool (step 4)

Step 3: Select the backup destination.

As mentioned above, EaseUS Todo Backup allows you to choose where backups are saved - locally or externally.

  • Click the "Browse..." button and select the location you want the backup to be saved:

Creating data backups with EaseUS Todo Backup tool (step 5)

Step 4: Safety measures and process completion.

Depending on the location you have chosen, there are a number of measures you should or should not take. If you are uploading to an internet-connected location (for example, Cloud storage, FTP, etc.), be sure to maintain your internet connection, otherwise you will have to start again. The same applies to external storage devices - do not unplug them until the process is complete.

  • The progress bar displays estimated time remaining until completion. Large backups (hundreds of gigabytes) can take hours to create (depending on storage device speed, internet connection, etc.). Therefore, the application also allows you to optionally choose what the system should do (shut down, sleep or hibernate) once the process has finished:

Creating data backups with EaseUS Todo Backup tool (step 6)

The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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