In Internet, a new ransomware named Ryuk ransomware is making rounds and target almost all System user. The aim or this ransomware is to make large Bitcoin payments after locking users files. If you are a System user and want to get complete information of Ryuk ransomware including it's file decryption guide then go through with this post completely.
Threat's Profile of Ryuk ransomware
Name of Threat | Ryuk ransomware |
Category | Ransomware |
Belongs To | Hermes Ransomware family |
Risk Impact | Very High |
Encipher Used | RSA 4096 and AES-256 |
Related Files | kIUAm.exe, horrible.exe |
Ransom Note | RyukReadMe.txt, UNIQUE_ID_DO_NOT_REMOVE.txt |
Ransom Amount | 15-50 BTC |
Email Addresses | |
Occurrences | Spam campaigns, infected servers, exploit kits, drive-by-downloads, pirated software, P2P file sharing sources etc. |
File Decryptable | No |
To delete Ryuk ransomware and decrypt your files, you must download Windows Scanner Tool. |
All Crucial Facts That You Must Know About Ryuk ransomware
Ryuk ransomware is considered as another cryptovirus that ruins Windows PC badly. This ransomware has already attacked to several companies. As per the depth analysis by researchers, they revealed that Ryuk ransomware is hailing from same family as the Hermes Ransomware which is mainly attributed to the infamous Lazarus group. Doesn't matter what OS you are using because it's developers are designed it in such a way that it can compromise almost all System executing on Windows based Operating System. The sole intention behind its developer is to extort money from the System user and for this it do series of notorious actions.
File Encryption Procedure of Ryuk ransomware
Ryuk ransomware is really very intrusive and invasive in nature that uses stealth infiltration tactic to compromise Windows machine. Once it gets installed into PC, it locks the selected data systematically and the makes them inaccessible or unavailable for use. It is capable to target almost all users generated content including PDFs, spreadsheets, documents, databases, images, audio or video files documents and many more. After targeting files and making them inaccessible, it generates a ransom note in text file format entitled as RyukReadMe.txt and displayed on desktop screen.
Know What RyukReadMe.txt Says
Ransom note contains information about the Ryuk ransomware attacks and it urges victim to transfer the large sum of ransom demanded fee via Bitcoin wallet to its developers. The cost of ransom fee may varies from 15 BTC to 50 BTC that depends of the encrypted file size. The team of malware researchers has been reported that the developers of Ryuk ransomware have already earned $640K. Once getting ransom note, most of the victim decide to pay ransom fee but they have no idea that it is one of the worst decision because by paying even large sum of ransom fee, you will not get the unique file decryption key. Therefore, System users must get rid of Ryuk ransomware from compromised machine even paying the large sum of ransom demanded fee.
Free Scan your Windows PC to detect Ryuk ransomware
Remove Ryuk ransomware From Your PC
Step 1: Remove Ryuk ransomware in Safe Mode with Command Prompt
- First of all disconnect your PC with network connection.
- Click restart button and keep pressing F8 key regularly while system restart.
- You will see “Windows Advanced Options Menu” on your computer screen.
- Select “Safe Mode with Command Prompt” and press Enter key.
- You must login your computer with Administrator account for full privilege.
- Once the Command Prompt appears then type rstrui.exe and press Enter
- Now follow the prompts on your screen to complete system restore.
Step 2: Remove Ryuk ransomware using MSConfig in Safe Mode:
- Power off your computer and restart again.
- While booting press the “F8 key” continuously to open “Windows Advanced Options Menu”.
- Use the arrow keys to select “Safe Mode” option and press Enter key.
- Once system get started go to Start menu. Type “msconfig” in the search box and launch the application.
- Go to the Startup tab and look for files from %AppData% or %Temp% folders using rundll32.exe. See an example below:
C:\Windows\System32\rundll32.exe C:\Users\username\appdata\local\temp\regepqzf.dll,H1N1
- Disable all the malicious entries and save the changes.
- Now restart your computer normally.
Step 3 : Kill Malicious Process Related To Ryuk ransomware
- Press Alt+Ctrl+Del buttons together.
- It will open the Task manager on your screen.
- Go to Process Tab and find Ryuk ransomware related process.
- Click the End Process Now button to stop the running process.
Step 4 : Remove Ryuk ransomware Virus From Registry Entry
- Press “Windows + R” key together to open Run Box.
- Type “regedit” and click OK button.
- Find and remove Ryuk ransomware related entries.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnceEx
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServicesOnce
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Runonce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
Now hopefully you have completely removed the Ryuk ransomware virus from your computer. If you are still get ransom message from the threat or unable to access your files, then it means that virus still remain into your computer. In such situation you don’t have any other option except removing this virus using any powerful malware removal tool.
Whereas if you have any backup of your infected or encrypted files, then you can also reinstall your Windows OS. This will erase all your files and data as along with the Ryuk ransomware infection. You will get a completely empty computer system with no files. Now you can use your backup to get your files. If you don’t have any backup then using malware removal tool is a better option for you.
If you have any query or question regarding your computer, then you can easily ask your problem to our experts. Go to the Ask Any Question page and get the answer for your query directly from out experts.