What is CHRB Ransomware
CHRB ransomware is a data locking ransomware belonging to the Matrix Ransomware family. It uses a unique pattern to change the filenames. It creates a Ransom note as a document file as “!README_CHRB!.rtf” file . So the file name is replaced and renamed with a ransom string. as “[[email protected]].[random_string].CHRB”. As soon as the files are targeted by CHRB Ransomware, a ransom note is created by CHRB Ransomware hackers that clearly contains the information as to how to contact them and other details on how to get the data decrypted. This ransomware encrypts files using AES-128 and RSA-2048 algorithms. This is why the files once encrypted cannot be unlocked without a specific decryption tool and private key. It is also clearly stated in the ransom note that if victims try to attempt with any third party decryptor, it will damage the data permanently. So intervention of hackers will be required and for this victims can contact them on the given email ids in the note as [email protected], [email protected], and [email protected] Furthermore, victims are given an option to upload up to 3 files and get it decrypted for free by sending them to the given email address. However it is mentioned that the files should not be important or must not contain any valuable information.
- Name: CHRB Ransomware
- Type: Ransomware, File locker virus
- Encrypted file extension: .CHRB
- Ransom Text Note: !README_CHRB!.rtf
- Email id of hackers: [email protected], [email protected], and [email protected]
- Distribution: by clicking on spam email, malicious attachments, macros, by torrent files, fake installers
- Symptoms: encrypts files and render them useless, demands ransom to unlock your files , drops ransom note on the compromised PC
- Malware Removal: Scan your PC with legit Antivirus Software.
Strategy Used by CHRB Ransomware
Like other Ransomware such as Matafaka Ransomware , CHRB Ransomware performs similar action to block access and make the data inaccessible by locking the files and data. Eventually thereafter the files are held hostage and a ransom amount is demanded by the hackers of CHRB Ransomware from the victims. This is all done to create panic among the victims. This is why it is important to create a backup of all the important data and files and to keep it on some other external storage devices or on cloud storage as backup.
How Did CHRB Ransomware Infect my Computer System
Cybercriminals mostly use executable files such as .exe, fake Java script, installers and emails with malicious attachments, macros to infect and attack systems with security loopholes. When users happen to click on these unknown emails they are likely to install CHRB Ransomware and other malicious pieces of software and program onto their system and devices. These emails are designed in such a way that they appear to be from legit and official sources.
How to Protect system from CHRB Ransomware
One should never use cracked versions of any software that is so readily available on the Internet. As they might be a source of CHRB Ransomware which gets installed on the PC thus corrupting and locking the stored files and data. Always insist on downloading software from authentic sources and from their official websites only. Users need to scan their PC on a regular basis. Scheduled scans can be also a very good option to opt for cleaning your system using Legit Anti-virus program.
Details of Antimalware with User’s Guide
Step 1 Remove CHRB Ransomware using “Safe Mode with Networking”
Step 2 Delete CHRB Ransomware using “System Restore”
Step 1 Remove CHRB Ransomware using “Safe Mode with Networking”
Windows XP and Windows 7 users:
First of all Reboot the PC in “Safe Mode”. For this users need to Click on “Start” option and then continuously Tap on F8 during the start process. Then a “Windows Advanced Option” menu will appear on the screen. Now Choose “Safe Mode with Networking” from the listed options.
This will open a new Windows homescreen and your PC or work-station will be working on “Safe Mode with Networking”.
For Windows 8
First Go to Start Screen. Now type “Advanced” after selecting settings within the searched results Within the “General PC Settings” option, Select “Advanced startup” option. Then click on the “Restart Now” option. This will boot work-station to “Advanced Startup Option Menu”. Now Press on “Troubleshoot” and then “Advanced options” button. Then under “Advanced Option Screen”, You need to press on “Startup Settings”. Now again, click on “Restart” button. This will restart PC or Work-station with “Startup Setting” screen. You need to tap F5 to boot in Safe Mode in Networking.
For Windows 10
First of all click on Windows logo by clicking on the “Power” icon. This will open a new menu. Select “Restart” by constantly keeping “Shift” button pressed on keyboard. Once the new Window open Select on “Troubleshoot” as advanced option. Within the startup settings users need to press on “Restart” by clicking on F5 button of the keyboard.
Step:2 How To Delete CHRB Ransomware using System Restore
For this you need to log in on the PC which is compromised by CHRB Ransomware. Now open any browser and download legit anti-malware software. Once installed you need to undergo complete system scan. Thereafter remove the infected and suspicious entries which are detected.
Suppose if you are unable to start PC in “Safe Mode with Networking”, you need not worry. Try “System Restore” Process
Continuously tap F8 Key during “Startup” and then “Advanced Option” menu will appear. Now from the given list of option you need to select “Safe Mode with Command Prompt” and hit on Enter button.
Within new open window of command prompt, type “cd restore” and then click “Enter”
Now type rstrui.exe and then press “ENTER”
In the new opened Window Click on “Next” option.
You can select and choose any of the “Restore Points” and click on Next (This would restore your PC to earlier period before CHRB Ransomware invasion when it was working fine.)
Press on “Yes” in new opened Window.
As soon as your PC gets restored to its previous time, download the suggested anti-malware tool and perform a deep scanning in order to remove CHRB Ransomware infected files if still present on the the work-station.
If you want to restore each file separately which is infected by this ransomware, kindly use “Windows Previous Version” feature. This step is most effective whenever “System Restore Function” is enabled on the PC or work-station.
Important Note: Some variants of CHRB Ransomware delete the “Shadow Volume Copies” so in such cases this feature may not work all the time and will work in specific cases only.
Know How To Restore Encrypted Files Individually
If you want to restore an individual file, you need to right click on it and then go to “Properties”. Now Select “Previous Version” tab. then Choose a “Restore Point” and finally click on “Restore” option.
If you want to access the files encrypted by CHRB Ransomware, alternatively you can try “Shadow Explorer”. To know more details on this application, Click here.
Important: Data Encryption Ransomware are very devastating and hence it is always better to take necessary precautions to avoid any attack on your work-station or PC. We recommend using a powerful anti-malware tool for real time protection. “SpyHunter”, “Enigma group policy objects” are enabled in the registries so that it can block harmful infections such as CHRB Ransomware.
Also, it is highly important to get a very unique feature called “Fall Creators Update” installed on Windows 10. This would ensure to offer “Controlled Folder Access” feature to block any kind of encryption of the data files. Using this feature all the files stored in their default locations are safe.
How To Recover Files Encrypted by CHRB Ransomware
You would have understood now that how you can remove the scripts and payloads of personal files that got encrypted due to CHRB Ransomware in order to protect your personal files which were fortunately not damaged or encrypted till now. If you are unable to retrieve the locked files, using “System Restore” and “Shadow Volume Copies” you must try using a Data Recovery Software.
Step 1: Download Data Recovery Software
Step 3: Click to Accept to agree the terms and agreement.
Step 4: Once installed, this program will be ready to execute. Now select the file you want to recover
Step 5: Select the drive on which the recovery tool is to be run upon. Then click on Scan option
Step 6: This will show Scan in progress bar