What is Krlock Ransomware
Krlock Ransomware is a data locking malware that belongs to MedusaLocker Ransomware Family. Although there is no major modification noticed in the Krlock Ransomware as compared to previous variants, it can cause massive destruction. It uses nasty AES and RSA Encryption techniques that makes the data inaccessible by and large. The files are held hostage and then the platform is set for the hackers to demand ransom from the innocent victims. The demanded ransom is in exchange for a decryption tool which is required to unlock and decrypt the locked data file and to restore them back. It is seen that locked files will have .Krlock as file extension. All the locked files will get appended with this new file extension and as such the renamed file is rendered useless. Suppose the original image file with the name 1.jpg will get renamed to 1.jpg.krlock as file extension. This is all done to encrypt the files of the victims. It is never easy to cope with Krlock Ransomware attacks as one cannot modify the files or rename it to its original extension. This ransomware hit the cyber world in the Wild and is closely similar to other variants of MeduasaLocker Ransomware such as L54 Ransomware.
|Type||Ransomware, Data Locking Malware|
|Other Variants||MedusaLocker, L54 Ransomware|
|File Extension||.krlock File Extension|
|Symptoms||Files get locked with .krlock File Extension, Ransom note is dropped on the system|
|Removal||Follow Krlock Ransomware Removal Guide|
How Does Krlock Ransomware Get Delivered?
Krlock Ransomware readily spreads and can hit any system globally as it gets installed through fake downloads, through malicious email attachments, using pirated software, and visiting porn websites. As soon as it attacks and targets the compromised PC, it goes after important data and files such as documents, archives, media, database and backups. Soon thereafter it drops the ransom note as ‘Recovery_Instructions.html’ as a ransom message. It bears all the information besides a strict warning to victims that they must avoid any recovery options or third party tools to recover encrypted data as it will lead to permanent damage and deletion of the files. There is no other way to recover data other than a decryption tool which can be only released by hackers of Krlock Ransomware. The ransom note further bears information of email ids of hackers [email protected] and [email protected]. that can be used for contacting the hackers before paying the ransom to them. However in order to establish a contact they need to visit server hosted using TOR Network also seen in the case of TOR Ransomware. It is also mentioned that victims can attach up to 3 encrypted or locked files that are to be decrypted as a free trial just to confirm that all the files will get restored if the ransom is paid to hackers. To prevail a sense of urgency, hackers have come up with the stipulated deadline for the victims to pay the ransom within 72 hours of the attack. If they fail to pay the ransom within this stipulated time period, the ransom amount will be increased. So this creates a sense of urgency and many of the victims proceed towards ransom payment within 72 hours of attack.
Mode of Ransom Note which is used by Variants of MedusaLocker Ransomware Family
- !HOW_RECOVERY_FILES! .HTML
Should Ransom be Paid to Krlock Ransomware?
No, it is never suggested or encouraged to pay the ransom to the Krlock Ransomware hackers. There is no guarantee that they would release the decryptor tool even after receiving the ransom. Also there are chances that victims might lose their hard earned money along with data. So users must remove Krlock Ransomware instead of adhering to the instructions of hackers. However in order to restore the data, a valid backup can be used if its saved on some different system or on cloud backup.
Details of Antimalware with User’s Guide
Step 1 Remove Krlock Ransomware using “Safe Mode with Networking”
Step 2 Delete Krlock Ransomware using “System Restore”
Step 1 Remove Krlock 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 Krlock Ransomware using System Restore
For this you need to log in on the PC which is compromised by Krlock 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 Krlock 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 Krlock 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 Krlock 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 Krlock 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 Krlock 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 Krlock Ransomware
You would have understood now that how you can remove the scripts and payloads of personal files that got encrypted due to Krlock 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