GandCrab 5.0.2 Ransomware

Also Known As: GandCrab 5.0.2 virus
Distribution: Moderate
Damage level: Severe

GandCrab 5.0.2 ransomware removal instructions

What is GandCrab 5.0.2?

GandCrab 5.0.2 is an updated variant of high-risk ransomware called GANDCRAB V5. Immediately after infiltration, GandCrab 5.0.2 encrypts most stored data and adds a random string as an appendix to each filename. For instance, "sample.jpg" might be renamed to a filename such as "sample.jpg.oapvkylmq". Furthermore, GandCrab 5.0.2 changes the desktop wallpaper and places a text file ("[random]-DECRYPT.txt") on the desktop.

The new desktop wallpaper contains a message stating that data is encrypted and encourages users to read the text file for detailed information. The text file also informs victims of the encryption and claims that data can only be restored using a unique decryption key. Unfortunately, this information is accurate. It is currently unknown which cryptography (symmetric or asymmetric) GandCrab 5.0.2 uses. In any case, each victim receives a unique decryption key required for decryption. All keys are stored on a remote server controlled by GandCrab 5.0.2's developers. Therefore, to receive their keys, victims must visit a Tor website and follow the instructions. The site states that victims must pay a ransom of $800 (in the Bitcoin or DASH cryptocurrency) to receive their keys. If the ransom is not paid within the given time frame (website contains a countdown timer), the cost doubles. Note that, despite these demands, cyber criminals cannot be trusted. Developers of GandCrab 5.0.2 often ignore victims, once payments are submitted. Therefore, paying usually gives no positive result and users are scammed. Therefore, we strongly advise you to ignore requests to submit payments or to contact these people. Unfortunately, there are no tools capable of cracking GandCrab 5.0.2 encryption and restoring data free of charge. Therefore, the only solution is to restore everything from a backup.

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

GandCrab 5.0.2 decrypt instructions

GandCrab 5.0.2 shares many similarities with Koolova, Dharma-Btc, NOT_OPEN LOCKER, and dozens of other ransomware-type viruses. Although developers of this software are different, these viruses have identical behavior: they encrypt data and make ransom demands. In most cases, size of ransom and type of cryptography used are the only major differences. Unfortunately, most employ algorithms that generate unique decryption keys (e.g., RSA, AES, and so on). Therefore, unless the virus has certain bugs/flaws or is still in development, restoring data manually without involvement of developers (contacting these people is not recommended) is virtually impossible. Ransomware-type viruses present a strong case for maintaining regular data backups, however, it is important to store them on a remote server (e.g., cloud) or unplugged storage device, otherwise ransomware encrypts backups together with regular data.

How did ransomware infect my computer?

Developers promote GandCrab 5.0.2 using spam email campaigns. Criminals send thousands of deceptive emails encouraging users to open malicious attachments. Once opened, however, these files stealthily download and install malware. Ransomware-type viruses are often distributed using trojans, fake software updaters, and unofficial software download sources. Trojans cause chain infections - one virus proliferates another. Fake software updaters infect computers by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than the promised updates. Third party software download sources (peer-to-peer [P2P] networks, third party software download sources, freeware download websites, etc.) present malicious executables as legitimate software. Users are tricked into downloading and installing malware.

Threat Summary:
Name GandCrab 5.0.2 virus
Threat Type Ransomware, Crypto Virus, Files locker
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?

Lack of knowledge and careless behavior are the main reasons for computer infections. Caution is the key to safety. Therefore, pay attention when browsing the Internet and downloading/installing software. Think twice before opening email attachments. Files that are irrelevant and those received from suspicious/unrecognizable email addresses should never be opened. In addition, download your apps from official sources only, using direct download links. Third party downloaders/installers often include rogue apps, and thus these tools should never be used. The same applies to software updates. It is important to keep installed applications up-to-date, however, this should be achieved through implemented features or tools provided by the official developer only. Have a reputable anti-virus/anti-spyware suite installed and running, since these tools can detect and eliminate malware before it does any damage. If your computer is already infected with GandCrab 5.0.2, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in GandCrab 5.0.2 ransomware text file ("[random]-DECRYPT.txt"):

---= GANDCRAB V5.0.2 =---

***********************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 WILL BE DECRYPTION ERRORS*****

Attention!

All your files, documents, photos, databases and other important files are encrypted and have the extension: .OAPVKYLMQ
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 5.0.2 desktop wallpaper:

GandCrab 5.0.2 wallpaper

Screenshot of GandCrab 5.0.2 website:

GandCrab 5.0.2 website

Text presented within this site:

We are sorry, but your files have been encrypted!
Don't worry, we can help you to return all of your files!
Files decryptor's price is 800 USD
If payment isn't made until 2018-03-08 10:45:13 UTC the cost of decrypting files will be doubled
Amount was doubled!
Time left to double price:
What the matter?
Your computer has been infected with GandCrab Ransomware. Your files have been encrypted and you can't decrypt it by yourself.
In the network, you can probably find decryptors and third-party software, but it won't help you and it only can make your files undecryptable
What can I do to get my files back?
You should buy GandCrab Decryptor. This software will help you to decrypt all of your encrypted files and remove GandCrab Ransomware from your PC.
Current price: $800.00. As payment, you need cryptocurrency DASH or Bitcoin
What guarantees can you give to me?
You can use test decryption and decrypt 1 file for free
What is cryptocurrency and how can I purchase GandCrab Decryptor?
You can read more details about cryptocurrency at Google or here.
As payment, you have to buy DASH or Bitcoin using a credit card, and send coins to our address.
How can I pay to you?
You have to buy Bitcoin or DASH using a credit card. Links to services where you can do it: Dash exchanges list, Bitcoin exchanges list
After it, go to our payment page Buy GandCrab Decryptor, choose your payment method and follow the instructions

A spam campaign distributing a malicious attachment that infiltrates GandCrab 5.0.2:

GandCrab 5.0.2 promoting email attachment

Text presented within this email:

Subject: Invoice from Property Investors
Invoice No. 226287
Dear Client,
Please contact us immediately if you are unable to detach to download your tax invoice/invoice payment.
Thank you.
Get Transaction Document 1-IV000226287
Copyright 2018 Melbourne Somersoft Group, All rights reserved.
You are receiving this email because you filled in a form on our website requesting to join our Email list.

Malicious attachment proliferated using this spam email campaign:

GandCrab 5.0.2 promoting attachment

Screenshot of files encrypted by GandCrab 5.0.2 (random extension):

Files encrypted by GandCrab 5.0.2

Update February 19, 2019 - Bitdefender has recently released a decryption tool capable of restoring data encrypted by GandCrab V1, V4, and all V5 versions (up to 5.1). 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's GandCrab decryptor:

GandCrab ransomware decryption tool by Bitdefender

GandCrab 5.0.2 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.

QR Code
GandCrab 5.0.2 virus QR code
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