Mbed Ransomware
Ransomware | 01/29/2020

How to remove Mbed Ransomware from your system?

About: Mbed Ransomware is the latest variant of infamous Djvu Ransomware. It infects the system & encrypts the files to render them unusable. It then demands hefty ransom amount in exchange of necessary decryption tools. Read the post to find possi...  Read More  

| Ransomware | How to remove Mbed Ransomware from your system?

Guide to Remove Mbed Ransomware

Mbed Ransomware is the latest weapon in the arsenal of the most wide-spread & devastating species of data-encrypting virus – the nasty Djvu/STOP Ransomware Clan. Just like its variants, Mbed spreads via spam e-mail campaigns, malvertising & trojanized fake software updates.

Threat Summary of Mbed

Designed with strong financial motives, this pernicious Mbed virus encrypts the data & demands hefty ransom amount in exchange of the decryption tool.

While encrypting the targeted files, Mbed Ransomware appends its malicious .mbed extension to the file names & makes them instantly inaccessible. In addition to that, it drops a ransom-demanding note on the victim’s desktop, which contains instructions for the victims to get their data decrypted.

Contacting the hackers & paying the ransom is the only possible solution of decryption, the note states.

But, are these claims true? Well, cyber-security analysts from around the world suggest not contacting the hackers. Investigation has shown that most of the victims do not get the promised decryption tool in exchange of ransom amount.

Then, what are the possible ways to remove Mbed Ransomware & decrypt .mbed virus files? How can one prevent Mbed Virus from encrypting the files? Read on to find answer to these questions.

Threat Summary of Mbed Ransomware

Threat Summary
Name Mbed
Type Ransomware
Category Malware
Targeted OS Windows
Symptoms It infects your system with the motive to encrypt system & user files. After successful encryption, it drops a ransom note that asks victims to pay hefty ransom amount in exchange of the decryption key.
Damage Encrypted files are inaccessible. Additionally, Mbed Ransomware may increase the malicious payload in your system.
Removal Download Removal Tool

Threat Behavior of Mbed Ransomware

The gigantic clan of the infamous Stop Djvu Ransomware recently got a brand-new member added to it. This latest strain of Djvu Ransomware has been named as Mbed Ransomware as it adds .mbed extension to the file names after encrypting them.

Some of the variants of Djvu Ransomware family include Vusad, Redmat, Moresa, Budak, Gehad and Seto Ransomware.

Just like its siblings, Mbed Ransomware uses multiple channels to distribute its infection such as spam e-mail campaigns, online advertising & malware-laden fake software updater.

Mbed Encrypted Files

Mbed Virus does not require any user intervention to get installed on the system. Once installed, it searches every nook & corner of the infected system for targeted file types & extensions.

When found, it encrypts the files by using highly-complex Encryption Algorithms such as (Rivest–Shamir–Adleman) & AES (Advanced Encryption Standard). The targeted file extensions are instantly made inaccessible to the users by appending the filenames with .mbed extension.

For example: A file named myimage.jpg might be renamed as “myimage.jpg.mbed” after encryption.

File Extensions Targeted by Mbed Ransomware are mentioned below:

  • Document files (.docx, .doc, .odt, .rtf, .text, .pdf, .htm, .ppt)
  • Audio Files (.mp3, .aif, .iff, .m3u, .m4u, .mid, .mpa, .wma, .ra, .avi, .mov, .mp4)
  • Video Files (.3gp, .mpeg, .3g2, .asf, .asx, .flv, .mpg, .wmv, .vob)
  • Images (.jpg, .jpeg, .raw, .tif, .gif, .png)
  • Backup Files (.bck, .bckp, .tmp, .gho)

Details of Mbed Ransom Note

The .Mbed Virus infection manifests through the encryption of files & .mbed extension being appended to the encrypted files. As a result, the victims are unable to open their documents, image files, video files, database files & other sensitive information.

After encryption, this nasty Djvu variant then leaves a ransom-demanding note on the victim’s desktop & in the folders containing .mbed files.

The ransom note is in a text format named as “_readme.txt”. It serves as a bridge between the impacted users & the attackers.

Mbed Ransom Note

The note contains the following information:

  • present situation of the system & files (about encryption)
  • summary of data restoration/decryption options
  • ransom amount & suggested time for paying it
  • hacker’s contact information such as e-mail address

Details of Ransom Amount Demanded by Hackers

The text assures decryption of the encrypted data with the help of private unique key, which is stored on hacker’s remote server. In order to purchase the decryption key from the cyber-crooks, the victims are required to pay the demanded ransom amount.

To prove recovery of the files is possible, the hackers offer to decrypt one file for absolutely no cost. The victims are required to send any one file (except database, backup or large excel sheet) on the hacker’s e-mail address. The hackers will decrypt it & send it back to the victim.

Mbed Targeted Files

The ransom amount demanded for the necessary decryption tools/key is $980. However, if the victim manages to contact hackers within 72 hours, rebate of 50% will be granted. Thus, the demanded ransom amount minimizes to $490.

To get the details of the payment, victims are encouraged to contact the hackers on mentioned e-mail addresses, gorentos@bitmessage.ch & restorealldata@firemail.cc.

Despite these claims, we advise not making the ransom payment to prevent the risk of getting scammed. According to the analysis, hackers avoid responding after the payment has been received.

By paying the ransom, a victim not only loses the money, but also loses the data permanently.

To prevent any further encryption by Mbed, you can remove it from system. However, doing so will not restore the encrypted data. The viable solution is to restore the files from a backup, if any.

Impacted users may refer to the possible Mbed Ransomware removal instructions given below to get rid of .Mbed Virus.

Distribution Techniques of Mbed Ransomware

The cyber-criminals behind Mbed File Virus use various strategies for malware distribution which include –

  1. Software Bundling: Software bundling is the process in which a malicious program is distributed with other free software, to get an unnoticed entry into your computer system. When a user installs a free application, the malicious programs gains a front door entry with the free application, the user has downloaded. Thus, it is a good idea to keep an eye on the installation screens while installing these free applications.
  2. Infected Storage Devices: Your system can also get infected by using removable media such as USB hard drives and jump drives without scanning them with an anti-virus.
  3. Spam Emails – Spamming is the most economic and common method used for the distribution of such malware. The targeted users get genuine looking emails which contain .doc, .txt, and other similar attachments. These attachments can be named as anything which can grab the user’s attention and triggers him/her to open the attachment. As soon as the user opens this attachment, the malware infects the user’s computer system.
  4. Malicious Websites or Malevolent Advertisements: The malicious websites are the ones which are created just for promoting the malware infections. Such websites include but are not limited to porn sites, torrent sites and other free downloading platforms. By visiting such websites, the adware infects the user’s computer without permission. Fake advertisements and updates like Flash player and windows updates which ask the user to update to the latest version are a few examples. When the users click on such links, their computer system gets infected. That is why, it is highly recommended to resist clicking on such links. Also avoid clicking on advertisements offering free stuff such as Win an iPhones, cars or free overseas trips etc.

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Mbed Ransomware Removal Instructions

STEP A: Reboot your system using Safe Mode with Networking

To restart the system to Safe Mode with Networking,  if already switched ON then follow the below steps:

Windows 7/ Vista/ XP

  1. Click on Windows icon present in the lower left corner of the computer screen.
  2. Select and click  Restart.
  3. When the screen goes blank, Keep tapping  F8  Key until you see the Advanced Boot Options window.
  4. With the help of arrow keys on keyboard, Select Safe Mode with Networking  option from the list and press the Enter Key. The system will then restart to Safe Mode with Networking.

5 Once the system restarts, click on the username and enter the password (if any) to log in.

Windows 10 / Windows 8

  1. Press and hold the Shift Key and simultaneously click on the windows icon present in the lower left corner of your computer screen.
  2. While the Shift key is still pressed click on the Power button and then click on Restart.
  3. Now select Troubleshoot → Advanced options → Startup Settings.
  4. When the Startup Settings screen appears which is the first screen to appear after restart, select and click on Enable Safe Mode with Networking. The system will then restart to Safe Mode with Networking.
  5. Once the system restarts in Safe Mode, click on the username and enter the password, if any to log in.

STEP B: Delete the suspicious file from Configuration Settings

  1. Type “Msconfig” in search box / Run Box, select it and press Enter.
  2. Click on “Services” Tab and click on “Hide all Microsoft services”.
  3. Select Mbed Ransomware from the list of remaining services and disable it by removing the tick mark from the checkbox and click on Apply button.

Windows 7

  1. Click on the next tab – “Startup”.
  2. Find any blank or suspicious entry or the entry with Mbed Ransomware mentioned and remove the check mark.
  3. Click on Apply button and then click on OK.

Windows 10

  1. Click on the next tab – “Startup”.
  2. Take the mouse cursor to ‘Open task Manager‘ link and click on it.  This opens the Task Manager window.
  3. Find any blank or suspicious entry or the entry with Mbed Ransomware mentioned and click on it.
  4. Then click on Disable button.

STEP C: Remove malicious file from Command Prompt

Once the system starts, ensure to use an account with administrative privilege to access Safe Mode with Command Prompt.

After the user enters admin credentials, Command prompt window is displayed wherein you are entitled to enter the below commands:

  1. Type the command “sc delete Mbed Ransomware” in the command prompt and press Enter.
  2. Type “exit” to exit the command prompt and restart the system in safe mode with command prompt.

STEP D: Restore the system files & settings

From Control Panel

For Windows 7

  1. Click on the ‘Start’ button on the task-bar. This will open the Start menu.
  2. Click on the ‘Control Panel’ button in the Start menu. This will open the control panel window.Step 2-Windows 7 Control Panel
  3. In the Control Panel window, click on the ‘View by:’ button on the top right. Select the Large Icon optionStep 3 - Windows 7 Control Panel
  4. In the control Panel window click on the ‘Recovery Icon’. This will open a window that will ask ‘Restore the computer to an earlier point in time’.Step 4- Windows 7 Control Panel
  5. Click on the ‘Open system restore’ button. This will open the ‘system restore ’window where you need to click on the Next Button.Step 5- Windows 7 Control Panel
  6.  Select the restore point that is prior the infiltration of Mbed Ransomware. After doing that, click Next.Step 6- Windows 7 Control Panel
  7. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Mbed Ransomware.Step 7-Windows 7 Control Panel

OR

From Command Prompt

  1. Type cmd in the search box and click on the command prompt to open the Command Prompt window. box and clicking on it.
  2. Once the Command Prompt window shows up, enter cd restore and click Enter.(Ensure that you in the system32 directory of Windows folder in C Drive)
  3. Now type rstrui and press Enter again.
  4. When a new window shows up, click Next and select your restore point that is prior the infiltration of Mbed Ransomware. After doing that, click Next.Step 4- Windows 7 Command PromptStep 4 b- Windows 7 Command Prompt
  5. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Mbed Ransomware.Step 7-Windows 7 Control Panel

OR

Method 3 : Directly type 'rstrui' in the search box

  1. Type ‘Rstrui’ in the search box present on the task bar. This will open the System restore dialog box.

Continue to follow steps 4 & 5 of Method 2 to restore the System Files and settings.

How to prevent Mbed Ransomware from infecting your system

  1. Keeping the Operating System Updated- In order to remain protected and avoid such infections, it is recommended to keep your Operating System updated by enabling the automatic update on your system. The systems with outdated or older versions of Operating System become an easy target for the attackers.
  2. Resist clicking on spam emails – One of the major techniques used for malware distribution is forwarding spam emails to the user. The system gets infected as soon as the user clicks on the attachment. These mails appear to be genuine, so be aware and resist falling for these tricks.
  3. Keep an eye on third party installations- It is quite important that you take due care while installing any third party applications for they are major source of such infections. Such malware programs come bundled with the free applications thereby requiring the user to remain cautious.
  4. Regular periodical backup- In order to keep your data and files safe, it is recommended to take regular back up of all your data and files either on an external drive or cloud.
  5. Use Anti-Virus Protection- We strongly recommend the use of antivirus protection/internet security in your PC like Vipre and BULL GUARD so that it remains safe.
  6. Enable the Ad Blocker/Popup Blocker in your browser- Enabling the popup blocker/ ad blocker in your chosen browser will help you to stay protected from annoying adware.

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