A researcher at Fortinet Security has discovered a new ransomware variant, called Rumble Crypt. The virus has been reported to have a payment page which is Tor-based, which points out to the possibility that it is already up and running. Rumble Crypt aims only for one – to infect the maximum amount of users and encrypt their files using a strong encryption algorithm. The encrypted files can no longer be opened with any program, and the only 100 percent working way remains to be the receiving of a decryption key from cyber-criminals after paying the ransom amount and contacting the cyber-criminals. Malware research experts strongly advise infected users not to pay the ransom. Instead, you may remove it yourself and try alternative methods to recover your files by using the information in this article.
Threat Summary
| Name |
Rumble Crypt |
| Type | Ransomware |
| Short Description | The malware encrypts users’ files, dropping ransom message as a text and an .HTML file. |
| Symptoms | The user may witness ransom messages and “instructions” and a sound message all linking to a web page and a decryptor. |
| Distribution Method | Via an Exploit kit. |
| Detection Tool |
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| User Experience | Join our forum to Discuss Rumble Crypt Ransomware. |
| Data Recovery Tool | Windows 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. |
Rumble Crypt Ransomware – Distribution
To be widespread, Rumble Crypt’s hacking team may use spamming software in combination with other tools that may spread the malicious files via redirects to hazardous web links or even malicious e-mail attachments. The spam messages usually include obfuscated executables that are mainly focused on being activated while remaining hidden and hence bypassing any firewalls and other real-time protection.
The e-mails may contain different subjects and content that usually aims to be as convincing as possible, for example:
Rumble Crypt Ransomware – More Information
As soon as Rumble Crypt has been installed on your computer, the ransomware may drop it’s payload which may consist of different type of files:
→ vssadmin delete shadows /for={Drive Volume} /all /quiet
The malicious files may be located in the usually targeted Windows folders which are:
- %AppData%
- %System%
- %Roaming%
- %SystemDrive%
- %Temp%
- %Local%
- %LocalRow%
After the files are done, the ransomware may modify the Windows Registry Editor so that these executables are ran automatically when Windows boots up. The usually targeted registry keys are the below-mentioned:
→ (key)HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run(key)
(key)HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce(key)
(key)HKEY_LOCAL_MACHINE \Software\Microsoft\ Windows\CurrentVersion\RunServices(key)
(key)HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce(key)
(key)HKEY_LOCAL_MACHINE \Software\Microsoft\Windows NT\CurrentVersion \Winlogon\Userinit(key)
(key)HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run(key)
(key)HKEY_CURRENT_USER \Software\Microsoft\Windows\CurrentVersion\RunOnce(key)
(key)HKEY_CURRENT_USER \Software\Microsoft\Windows\CurrentVersion\RunServices(key)
(key)HKEY_CURRENT_USER \Software\Microsoft\Windows\CurrentVersion\Run ServicesOnce(key)
(key)HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows(key)
After its malicious files run on startup, the encryption process started by Rumble Crypt begins. This virus looks for widely used types of files which are usually:
- Videos.
- Audio files.
- Databases.
- Photoshop files.
- Microsoft Office documents.
- Files associated with other often used software.
After encryption, the data enciphered by Rumble Crypt ransomware become utterly useless. Rumble Crypt may also add a file extension that is random or corresponds to its name after the original file extension. The virus may use either AES or RSA encryption algorithms that generate a unique key which is sent to the cyber-criminals’ command and control servers.
The virus then drops a ransom note as a text file and an .HTML file which leads to the following web page:
Rumble Crypt Ransomware – Conclusion, Removal, File Restoration
Judging by the ransom note of this virus, Rumble Crypt ransomware is primarily oriented into using Tor networking to communicate with its victims. It also uses the e-mail address rumblecrypt@rediffmail.com for a so-called “customer support” by the cyber-crooks. Experts strongly advise that this virus should immediately be removed from any infected computer instead of paying ransom money in BitCoin to cyber-criminals that may or may not deliver.
To remove Rumble Crypt ransomware, we strongly advise you to follow the step-by-step instructions below and use the information in this article to look for the malicious files and other objects dropped on your computer b Rumble Crypt ransomware virus. Furthermore, experts strongly advise users to download an advanced anti-malware program for several good reasons. One of them is that this is a significantly increased protection against ransomware and the other more important reason is that it will automatically and swiftly detect and remove Rumble Crypt ransomware from your computer.
To attempt file restoration, we advise you to attempt the steps from section “3. Restore files encrypted by Rumble Crypt” while researchers release a decryptor which we will post in this article as an update.
Ventsislav Krastev
Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.
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Step 1: Scan for Rumble Crypt with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Rumble Crypt and related malware from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
Follow the instructions above and you will successfully delete most unwanted and malicious programs.
Step 3: Clean any registries, created by Rumble Crypt on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Rumble Crypt there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Boot Your PC In Safe Mode to isolate and remove Rumble Crypt
Step 5: Try to Restore Files Encrypted by Rumble Crypt.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Rumble Crypt aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Rumble Crypt-FAQ
What is Rumble Crypt Ransomware?
Rumble Crypt is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
What Does Rumble Crypt Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Rumble Crypt Infect?
Via several ways.Rumble Crypt Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
Another way you may become a victim of Rumble Crypt is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .Rumble Crypt files?
You can't without a decryptor. At this point, the .Rumble Crypt files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Rumble Crypt files successfully, then do not despair, because this virus is still new.
Can I Restore ".Rumble Crypt" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Rumble Crypt files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Rumble Crypt Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Rumble Crypt ransomware and then remove it without causing any additional harm to your important .Rumble Crypt files.
Can I Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Rumble Crypt Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Rumble Crypt Research
The content we publish on SensorsTechForum.com, this Rumble Crypt how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the Rumble Crypt ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
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