Robbinhood Ransomware

Also Known As: Robbinhood virus
Distribution: Low
Damage level: Severe

RobbinHood ransomware removal instructions

What is RobbinHood?

Ransomware-type programs are computer infections that cyber criminals use to prevent people from accessing their files and to blackmail them by making ransom demands. RobbinHood was discovered by Michael Gillespie and is an example of one of these programs. It encrypts data stored on the system, rendering files unusable. To regain access to their files, people are encouraged to purchase a specific decryption tool. RobbinHood renames each encrypted file with the following format: "Encrypted_random.enc_robbinhood" (the word "random" is replaced with a string of random numbers and characters). For example, "1.jpg" might be renamed to a filename such as "Encrypted_1y5u5msd65321fd2.enc_robbinhood", and so on. This program creates an HTML file ("_Decryption_ReadMe.html") containing a ransom message, which provides instructions about how to make payment and receive a decryption tool.

As mentioned, the "_Decryption_ReadMe.html" HTML file contains instructions about how to contact cyber criminals, make payment, and so on. It states that RobbinHood encrypted files with the RSA-4096 cryptography algorithm. To acquire a decryption tool (key), ransomware victims must pay 0.8 or 13 Bitcoins using a Bitcoin wallet address presented in the HTML file. The cost depends on the number of infected systems. It goes on to state that the cost is increased by $10,000 for each day following the fourth day since encryption. Therefore, people are encouraged to make payment in no less than four days after encryption. There are three email addresses provided to make contact with the cyber criminals who developed RobbinHood. There is also an alternative method using a contact form that can be accessed through a Tor browser. People who have their data encrypted by RobbinHood are offered free decryption of three files (no larger than 10 MB in total) as 'proof' that these cyber criminals have a decryption tool/key, however, they promise to send it only when their ransom demands are met. Unfortunately, no cyber criminals (ransomware developers) can be trusted. In many cases, people are scammed: they pay for decryption tools/keys and receive nothing in return. Therefore, cyber criminals often start to ignore victims once their demands are met. In most cases, only the ransomware developers have decryption tools/keys. Ransomware-type programs encrypt data with cryptography algorithms that make decryption without the involvement of cyber criminals impossible. The only way to restore files without paying is to use a data backup that was created before encryption.

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

RobbinHood decrypt instructions

There are many ransomware-type programs online (such as CMG, L1LL, and Prus). Most encrypt data and encourage victims to pay ransoms. Essential differences between these programs are usually cost of decryption and cryptography algorithm used to encrypt data. Decryption without contacting cyber criminals is usually impossible, unless the program contains bugs/flaws or is not fully developed. Therefore, we recommend that you generate regular data backups and store them on remote servers or storage devices that are not connected to your system (otherwise, ransomware-type programs are capable of encrypting backups together with other data stored on the computer).

How did ransomware infect my computer?

It is unknown exactly how RobbinHood developers distribute/proliferate this infection, however, most cyber criminals use similar methods. A common method is to send emails that contain malicious attachments. Typically, attached files are Microsoft Office documents, PDFs, JavaScript files, archives such as ZIP, RAR and .exe files (executables). The main purpose of these spam email campaigns is to trick people into opening the attached file, which then downloads and installs ransomware or another high-risk computer infection. Another way to proliferate malicious files and cause computer infections is through dubious software download sources such as Peer-to-Peer networks (eMule, torrent clients, and so on), free file hosting, freeware download and unofficial websites, third party downloaders, and other sources of this type. Cyber criminals present their infected files as legitimate, however, once they are downloaded and opened/installed, they cause computer infections such as ransomware. If a Trojan programs is installed, this might be the reason for computer infection with ransomware-type programs. When installed, trojans proliferate other viruses. Various unofficial/fake software updaters can be used to proliferate ransomware. They cause computer infections by downloading and installing malicious programs rather than updates or fixes, or they exploit bugs/flaws of outdated software on the system. Various software 'cracking' tools operate in a similar manner: rather than activating operating systems or programs free of charge, they download and install viruses.

Threat Summary:
Name Robbinhood virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension "Encrypted_random.enc_robbinhood" filename (the word "random" is replaced with a string of random numbers and characters)
Ransom Demanding Message _Decryption_ReadMe.html file
Ransom Amount 0.8 - 13 Bitcoins (the price increases by $10,000 every day).
Detection Names Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.31919436), ESET-NOD32 (Win32/Filecoder.RobbinHood.A), Kaspersky (Trojan-Ransom.Win32.Robin.a), 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?

To avoid computer infection with ransomware-type and other high-risk infections, take the following precautions. If a received email contains an attachment and is sent from an unknown, untrustworthy, or suspicious email address, do not open the attachment or website link without making sure it is safe to do so. These emails are often irrelevant, although they are presented as important and official. Keep installed programs updated, however, use only implemented functions or tools provided by official developers. Do not download software from untrustworthy/unofficial websites, using third party downloaders, or the other dubious sources mentioned above. Use official, reputable websites and direct links. Do not activate installed software using third party tools ('cracks'), since this is a cyber crime. Furthermore, these tools cause computer infections. Keep your computer safe by having reputable anti-spyware or anti-virus software installed. If your computer is already infected with RobbinHood, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Screenshots of "_Decryption_ReadMe.html" HTML file:

robbinhood ransomware html file 1 robbinhood ransomware html file 2 robbinhood ransomware html file 3

Text presented in RobbinHood ransomware HTML file:

What happened to your files?
All your files are encrypted with RSA-4096,
RSA is an algorithm used by modern computers to encrypt and decrypt the data. RSA is an asymmetric cryptographic algorithm. Asymmetric means that there are two different keys. This is also called public key cryptography, because one of the keys can be given to anyone:
1 - We encrypted your files with our "Public key"
2 - You can decrypt, the encrypted files with specific "Private key" and your private key is in our hands ( It's not possible to recover your files without our private key )
Is it possible to get back your data?
Yes, We have a decrypter with all your private keys. We have two options to get all your data back.
Follow the instructions to get all your data back:
Step 1 : You must send us 0.8 Bitcoin(s) for each affected system
Step 2 : Inform us in panel with hostname(s) of the system you want, wait for confirmation and get your decrypter
Step 1 : You must send us 13 Bitcoin(s) for all affected system
Step 2 : Inform us in panel, wait for confirmation and get all your decrypters
Our Bitcoin address is: 132wg6kkJJ4MpNKnuhVoptYPmYHf6C5xHE
Access to the panel ( Contact us )
The panel address: http://xbt4titax4pzza6w.onion/EvcNuvq4gckb/
Alternative addresses
Access to the panel using Tor Browser
If non of our links are accessible you can try tor browser to get in touch with us:
Step 1: Download Tor Browser from here:
Step 2: Run Tor Browser and wait to connect
Step 3: Visit our website at: panel address
If you're having a problem with using Tor Browser, Ask Google: how to use tor browser
Wants to make sure we have your decrypter?
To make sure we have your decrypter you can upload at most 3 files (maximum size allowance is 10 MB in total) and get your data back as a demo.
Where to buy Bitcoin?
The easiest way is LocalBitcoins, but you can find more websites to buy bitcoin using Google Search: buy bitcoin online

Screenshot of files encrypted by RobbinHood ("Encrypted_random.enc_robbinhood" extension):

Files encrypted by RobbinHood

Update February 6, 2020 - Crooks have recently released an updated version of RobbinHood ransomware, which appends a slightly different extension (".enc_robbin_hood") and drops different ransom notes (four copies, named "_Readme_Decrypt__Files.html", "_Readme_Help_Important.html", "_Readme_Help_Help_Help.html" and "_Readme_Recovery_ReadMe.html").

Screenshot of the updated Robinhood ransomware's note:

Ransom note dropped by the updated RobbinHood ransomware

Text presented within this file:

How to recovery your files
Your network targeted by RobbinHood ransomware.
We've been watching you for days and we've worked on your systems to gain full access to your company and bypass all of your protections.
You must pay us in 4 days, if you don't pay in the speficied duration, the price increases $10,000 each day after the period. After 10 days your keys and your panel will be removed automatically and you won't be able to get your data back. We're watching you, if you want to know who we are, just ask google, don't upload your files to virustotal or services like that, don't call FBI or other security organizations. For security reasons don't shutdown your systems, don't recover your computer, don't rename your files, it will damage your files. All procedures are automated so don't ask for more times or somthings like that we won't talk more, all we know is MONEY. If you don't care about yourself we won't too. So do not waste your time and hurry up! Tik Tak, Tik Tak, Tik Tak!

What happened to your files?
All of your files locked and protected by a strong encryption with RSA-4096 ciphers.
More information about the RSA can be found here:

In summery you can't read or work with your files, But with our help you can recover them.
It's impossible to recover your files without private key and our unlocking software ( You can google: Baltimore city, Greenville city and RobbinHood ransomware )

Just pay the ransomware and end the suffering then get better cybersecurity

How to get private key or unlocking software?
The only way is to contact us: Click here
How much you must pay ?
The only way is to contact us: Click here

How To Access To Our Website?
For accessing to our website you must install Tor browser:
  1 - Open your internet browser (If you don't know run internet explorer or firefox or chrome)
  2 - Go to this address: hxxps://
  3 - Click on the windows logo and Download Tor Browser
  4 - Follow the instruction and install it
  5 - Run Tor-Browser with clicking on connect
  6 - After initializing a normal internet browser will be opened (similar internet explorer window)
  7 - Enter our web site address: -
  8 - Now you are in our website and we are accessible there!

If you have any problem yet to accessing our web site, Ask Google: " how to use tor browser "

Appearance of this file (GIF):

Ransom note dropped by the updated RobbinHood ransomware (GIF)

Screenshot of files encrypted by the updated RobbinHood ransomware (".enc_robbin_hood" ransom note):

Files encrypted by the updated RobbinHood ransomware

Update 19 February, 2020 - Cyber criminals have recently started spreading RobbinHood ransomware in a very unusual way. They're using a driver vulnerability (to be more specific, Gygabyte driver) in order to infiltrate the system and remove/disable the existing anti-virus software so that there wouldn't be any interferences while injecting the actual malware. More information regarding this malware campaign can be found in our news article.

Update April 20, 2020 - Crooks have released yet another variant of Robbinhood ransomware which appends ".rbhd" extension (e.g., "1.jpg" would be renamed to "1.jpg.rbhd" and so on so forth).

RobbinHood 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 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 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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