Mirai virus. How to delete? (Removal tutorial)

removal by Julie Splinters - - | Type: Malware
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Mirai virus maintains its cyber terror

Mirai virus, meaning the ‘the future’ in the Japanese language, was first discovered in April 2016 when a group of malware researchers has revealed a major discovery of enormous ‘botnet’ – the network of infected machines which are infected with one specific programming code. Since them, the malware has occasionally made into the spotlight by paralysing several dozens of IoT devices. One of the peculiar preference of this threat – it targets exclusively Linux operating systems and IoT devices. Since then, the virus has multiplied into several dozens of infections which are classified into several botnets. The tracks lead to different countries: the US, Brazil, China, etc. One of the latest targets – German telecommunications company ‘Deutche Telecom.’ Even if you are a Windows or Mac OS user, do not let the idea that you are safe from this infection, take over your mind. Get acquainted with Mirai removal and prevention methods.

The credits for developing such massive virtual threat belong to the Internet user called ‘Anna-senpai.’ This user, who supposedly is a fan of the Japanese pop-culture, has remained a mysterious figure in the cyber space. However, an IT expert, Brian Krebs have found interesting evidence which leads to Paras Jha, a prodigy and the president of ProTraf Solutions. Nonetheless, the traces of Mirai botnets have been detected globally. One of the recent versions of this malware Mirai (Linux.Gafgyt.B) has been detected in Brazil.

The original version of Mirai virus mainly targets IoT devices and surveillance devices. In October 2016, it hit one of the biggest DNS providers, Dyn and its customers. It resulted in paralysed Twitter, Reddit, and Spotify accounts. It is suspected that the attack of such magnitude was launched by 10 million corrupted devices. In the same month, a Chinese electronics manufacturer reported hacked DVRs, cameras, and other devices.

The attack also reverberated in Europe. In November 2016, about 1 million clients of ‘Deutsche Telecom’ reported having no Internet connection. Virus analysts suspect that the crooks have mishandled the attack: their original purpose was to steal users’ personal data. Regarding this incidents, the malware remains to be one of the biggest and most destructive virtual menaces. Several dozens of Mirai botnets all over the world makes the matters even more complicated. On the other hand, there are still countermeasures and means to remove Mirai virus.

Is there a way to prevent the malware?

Since Mirai virus targets IoT devices and Linux operating systems, you should concentrate on the protection of these systems. Before acquiring a new IoT device, get acquainted with its manual and manufacturer. Change default passwords. You might also alter the present encryption system for the Wi-Fi network to a more elaborate one. Opt from Telnet login to SSH. Once the latest software updates for the device are issued, install them right away. Such advice is applicable for Linux OS users as well.

Mirai termination

Since Mirai remains to be one of the formidable virtual infections, proper protection and vigilance are of utmost importance. Bear in mind that Windows or Mac OS-adapted versions might appear in the cyber space as well. Regarding these systems, Reimage or Malwarebytes Anti Malware serve as malware elimination options. They are able to locate the source of infection and terminate all components. Update them regularly. If this menace occupies your device, use the below instructions to regain the full control of the device and then remove Mirai virus.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Computer security experts recommend using Reimage to uninstall Mirai virus. Reimage scans the entire computer system and checks whether it is infected with spyware/malware or not. If you want to remove computer threats and secure your computer system, you should consider buying the licensed version of Reimage.

You can find more details about this program in Reimage review.

You can find more details about this program in Reimage review.
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Press mentions on Reimage

Manual Mirai Virus Removal Instructions:

Eliminate Mirai using Safe Mode with Networking

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

If you have doubts that Mirai or the threat of similar origin has occupied the computer, turn on the computer in Safe Mode and launch the malware elimination tool.

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove Mirai

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove Mirai completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate Mirai using System Restore

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of Mirai and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of Mirai.

Bonus: Restore your files

Using the tutorial provided above you should be able to eliminate Mirai from the infected device. novirus.uk team has also prepared an in-depth data recovery guide which you will also find above.

There are a couple of methods you can apply to recover data encrypted by Mirai:

It is strongly recommended to take precautions and secure your computer from malware attacks. To protect your PC from Mirai and other dangerous viruses, you should install and keep a powerful malware removal tool, for instance, Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Julie Splinters
Julie Splinters

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