Remove Mamai Ransomware (Open Locked Data)

Complete Steps To Terminate File-Locking Software

Mamai Ransomware is a destructive file-locking malware which is a new variant of MedusaLocker ransomware. It can easily encrypt all of the users’ important files with the help of a powerful algorithm and make them completely inaccessible or unusable. During the encryption, it also appends the infected files with a “.mamai10” extension, which strengthens the hold over them. The main purpose of the crypto-viruses like Mamai virus, KRUU ransomware, etc. behind locking up users’ valuable data is to force them into paying ransom fee in exchange for the files decryption. And hence, following the encryption, it leaves a ransom note titled “How_to_back_files.html” on the desktop and blackmails the victims for the money.

Threat Analysis

Name: Mamai Ransomware

Class: Ransomware, File-locking malware

Features: Encrypts users’ data and asks them to pay ransom for the decryption

Extension: .mamai10

Danger level: High

Ransom note: How_to_back_files.html

Hackers’ Contact: Website on Tor network, [email protected], [email protected]

Signs: Files become inaccessible, unusual file extension, ransom note appearing

Distribution: Malicious email attachments, insecure download channels, etc.

Mamai Ransomware: Depth Analysis

Judging on the note shown by Mamai Ransomware, it is clear that this malware targets companies and not the home users. It is stated that users’ files have been encrypted using the combination of AES and RSA cryptographic algorithms and their personal data is stolen. Renaming or modifying the infected files and using third-party tool are strongly advised against as it may lead to permanent data loss. The only way to regain access to the compromised data is by paying ransom to the attackers. If the Mamai Ransomware victims fail to make the payment, the stolen data will be published or sold. For more details, they have to contact the criminals within 72 hours.

Is It Worthy To Pay Ransom?

Hackers may claim that once the ransom is paid, they will send you the decryption tool, and thus you will be able to restore the files. But this is not true, as in many cases, attackers just fade away with the money and leave the affected users with empty hands and the locked data. In addition to that, fulfilling such crooks’ demands will only boost their confidence and they will definitely target more gullible users including you. This way you will sponsor this illegitimate business, hence refrain from doing so.

Methods To Recover The Infected Files:

It is highly to remove Mamai Ransomware first before you try to restore your contaminated files. For this purpose, rely on professional removal tool instead of going for automatic elimination method. Having done this, try to recover the compromised data with the help of backup copies if you have any, stored on any external drive or cloud. If you don’t possess an appropriate backup, we suggest employing our useful file-recovery software, especially crafted for this purpose. But again, malware removal must be performed prior to choosing any recovery method.

Frequently Asked Questions

How did Mamai Ransomware lock my data?

Users themselves in general let such dreadful threats into their PCs when they open spam email attachments or visit unreliable sites. Shortly after the penetration, ransomware seeks for the target file types by scanning the entire system and once detected, encrypts each of them using a complex algorithm

Can I pay to the crooks for my data?

We do not recommend paying ransom to the hackers as this option is not reliable. You will never know that the attackers will indeed provide you with the decryption tool even if you meet all their demands. Rather than this, use backups copies or our proficient file-recovery software, only after removing the parasite however.

Message In The Ransom Note:

YOUR PERSONAL ID:

–

/!\ YOUR COMPANY NETWORK HAS BEEN PENETRATED /!\

All your important files have been encrypted!

Your files are safe! Only modified. (RSA+AES)

ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE

WILL PERMANENTLY CORRUPT IT.

DO NOT MODIFY ENCRYPTED FILES.

DO NOT RENAME ENCRYPTED FILES.

No software available on internet can help you. We are the only ones able to

solve your problem.

We gathered highly confidential/personal data. These data are currently stored on

a private server. This server will be immediately destroyed after your payment.

If you decide to not pay, we will release your data to public or re-seller.

So you can expect your data to be publicly available in the near future..

We only seek money and our goal is not to damage your reputation or prevent

your business from running.

You will can send us 2-3 non-important files and we will decrypt it for free

to prove we are able to give your files back.

Contact us for price and get decryption software.

qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion

* Note that this server is available via Tor browser only

Follow the instructions to open the link:

1. Type the addres “hxxps://www.torproject.org” in your Internet browser. It opens the Tor site.
2. Press “Download Tor”, then press “Download Tor Browser Bundle”, install and run it.
3. Now you have Tor browser. In the Tor Browser open qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion
4. Start a chat and follow the further instructions.

If you can not use the above link, use the email:

[email protected]

[email protected]

* To contact us, create a new free email account on the site: protonmail.com

IF YOU DON’T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER.

Antimalware Details And User Guide

Click Here For Windows

Click Here For Mac

Step 1: Remove Mamai Ransomware through “Safe Mode with Networking”

Step 2: Delete Mamai Ransomware using “System Restore”

Step 1: Remove Mamai Ransomware through “Safe Mode with Networking”

For Windows XP and Windows 7 users: Boot the PC in “Safe Mode”. Click on “Start” option and continuously press on F8 during the start process until the “Windows Advanced Option” menu appears on the screen. Choose “Safe Mode with Networking” from the list.

Now, a windows homescreen appears on the desktop and work-station is now working on “Safe mode with networking”.

For Windows 8 Users: Go to the “Start Screen”. In the search results select settings, type “Advanced”. In the “General PC Settings” option, choose “Advanced startup” option. Again, click on the “Restart Now” option. The work-station boots to “Advanced Startup Option Menu”. Press on “Troubleshoot” and then “Advanced options” button.  In the “Advanced Option Screen”, press on “Startup Settings”. Again, click on “Restart” button. The work-station will now restart in to the “Startup Setting” screen. Next is to press F5 to boot in Safe Mode in Networking.

For Windows 10 Users: Press on Windows logo and on the “Power” icon. In the newly opened menu, choose “Restart” while continuously holding “Shift” button on the keyboard. In the new open “Choose an option” window, click on “Troubleshoot” and then on the “Advanced Options”. Select “Startup Settings” and press on “Restart”. In the next window, click on “F5” button on the key-board.

Step 2: Delete Mamai Ransomware using “System Restore”

Log-in to the account infected with Mamai Ransomware. Open the browser and download a legitimate anti-malware tool. Do a full System scanning. Remove all the malicious detected entries.

In case if you cannot start the PC in “Safe Mode with Networking”, Try using “System Restore”

• During the “Startup”, continuously press on F8 key until the “Advanced Option” menu appears. From the list, choose “Safe Mode with Command Prompt” and then press “Enter”

• In the new opened command prompt, enter “cd restore” and then press “Enter”.

• Type: rstrui.exe and Press “ENTER”

• Click “Next” on the new windows

• Choose any of the “Restore Points” and click on “Next”. (This step will restore the work-station to its earlier time and date prior to Mamai Ransomware infiltration in the PC.

• In the newly opened windows, press on “Yes”.

Once your PC gets restored to its previous date and time, download the recommended anti-malware tool and perform a deep scanning in order to remove Mamai Ransomware files if they left in the work-station.

In order to restore the each (separate) file by this ransomware, use “Windows Previous Version” feature. This method is effective when “System Restore Function” is enabled in the work-station.

Important Note: Some variants of Mamai Ransomware delete the “Shadow Volume Copies” as well hence this feature may not work all the time and is applicable for selective computers only.

How to Restore Individual Encrypted File:

In order to restore a single file, right click on it and go to “Properties”. Select “Previous Version” tab. Select a “Restore Point” and click on “Restore” option.

In order to access the files encrypted by Mamai Ransomware, you can also try using “Shadow Explorer”. In order to get more information on this application, press here.

Important: Data Encryption Ransomware are highly dangerous and it is always better that you take precautions to avoid its attack on your work-station. It is advised to use a powerful anti-malware tool in order to get protection in real-time. With this help of “SpyHunter”, “group policy objects” are implanted in the registries in order to block harmful infections like Mamai Ransomware.

Also, In Windows 10, you get a very unique feature called “Fall Creators Update” that offer “Controlled Folder Access” feature in order to block any kind of encryption to the files. With the help of this feature, any files stored in the locations such as “Documents”, “Pictures”, “Music”, “Videos”, “Favorites” and “Desktop” folders are safe by default.

It is very important that you install this “Windows 10 Fall Creators Update” in your PC to protect your important files and data from ransomware encryption. The more information on how to get this update and add an additional protection form rnasomware attack has been discussed here.

How to Recover the Files Encrypted by Mamai Ransomware?

Till now, you would have understood that what had happed to your personal files that got encrypted and how you can remove the scripts and payloads associated with Mamai Ransomware in order to protect your personal files that has not been damaged or encrypted until now. In order to retrieve the locked files, the depth information related to “System Restore” and “Shadow Volume Copies” has already been discussed earlier. However, in case if you are still unable to access the encrypted files then you can try using a data recovery tool.

Use of Data Recovery Tool

This step is for all those victims who have already tries all the above mentioned process but didn’t find any solution. Also it is important that you are able to access the PC and can install any software. The data recovery tool works on the basis of System scanning and recovery algorithm. It searches the System partitions in order to locate the original files which were deleted, corrupted or damaged by the malware. Remember that you must not re-install the Windows OS otherwise the “previous” copies will get deleted permanently. You have to clean the work-station at first and remove Mamai Ransomware infection. Leave the locked files as it is and follow the steps mentioned below.

Step1: Download the software in the work-station by clicking on the “Download” button below.

Step2: Execute the installer by clicking on downloaded files.

Step3: A license agreement page appears on the screen. Click on “Accept” to agree with its terms and use. Follow the on-screen instruction as mentioned and click on “Finish” button.

Step4: Once the installation gets completed, the program gets executed automatically. In the newly opened interface, select the file types that you want to recover and click on “Next”.

Step5: You can select the “Drives” on which you want the software to run and execute the recovery process. Next is to click on the “Scan” button.

Step6: Based on drive you select for scanning, the restore process begins. The whole process may take time depending on the volume of the selected drive and number of files. Once the process gets completed, a data explorer appears on the screen with preview of that data that is to be recovered. Select the files that you want to restore.

Step7. Next is to locate the location where you want to saver the recovered files.