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Magniber ransomware virus. How to remove? (Uninstall guide)

removal by Alice Woods - - | Type: Ransomware

Magniber ransomware is a cyberthreat that locks up personal files and demands ransom for decryption key

The image reflecting Magniber payment site
Magniber is a deadly virus that can render all personal files useless

Questions about Magniber ransomware virus

Magniber is ransomware that first attacked victims in late 2017. Its name comes from Magnitude (since malware was spread with the help of Magnitude exploit kit) and Cerber. The crypto-virus uses an AES-128 encryption algorithm to encrypt data, ads a file extension consisting of 5 to 9 letters. The latest variant is using a .ndpyhss appendix. Soon after encryption, ransomware drops a ransom note which is written in either English or Korean and lets victims know that they need to pay 0.2BTC for file release, which later doubles to 0.4BTC.

Name Magniber ransowmare
Type Crypto-virus
Associated with Cerber virus
Exploit used Magnitude exploit kit
Demanded ransom 0.2 BTC; 0.4BTC in five days
Extensions used

.fprgbk; .ihsdj; .kgpvwnr; .vbdrj; .skvtb; .vpgvlkb; .dlenggrl; .dxjay; .fbuvkngy; .xhspythxn; .demffue; .mftzmxqo; .qmdjtc; .wmfxdqz; .ndpyhss

Symtoms Encrypted files
Distribution CVE-2016-0189 vulnerability in Internet Explorer
Elimination Download and install Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware. Reboot PC in safe mode
Decryption Available here (newest versions)and here

Magniber cyber threat was noticed spreading via Magnitude exploit kit in October 2017. This exploit kit has been used by Cerber virus. However, it’s not the only similarity to the infamous ransomware.[1].

The crypto-virus exclusively targets South Korean computer users. Interestingly, the malware terminates itself (by deleting its ping.exe[2] executable file) if it detects other than the Korean language.

Magniber - the deadly virus
Locked files can be restored from back-ups, using original decryption key created by hackers, or using official tool by Korean security experts

The malware is using AES cipher. Before end of March 2018, it was almost impossible to decrypt files without AES key. However, South Korean cybersecurity experts managed to crack the code for most of Magniber ransomware versions.

This fact sparks suspicion that North Korean hackers might have created the malware. Such assumption is not baseless taking into account the cyber capabilities of this country[3] However, this theory still needs evidence.

Magniber ransomware is designed to encrypt files and demand to pay the ransom. Malware has been updated several times and the latest updates were spotted in June 2018.[4] This version adds .ndpyhss file extension and drops a ransom note README.txt.

Each of the new variant appends different file extension. Currently, malware locks files with these suffixes:

  • .fprgbk;
  • .ihsdj;
  • .kgpvwnr;
  • .vbdrj[5];
  • .skvtb;
  • .vpgvlkb;
  • .dlenggrl;
  • .dxjay;
  • .fbuvkngy;
  • .xhspythxn;
  • .demffue;
  • .mftzmxqo;
  • .qmdjtc;
  • .wmfxdqz;
  • .ndpyhss

Magniber ransomware encrypts all files
Victims have five days before ransom doubles

After data encryption, malware offers to buy My Decryptor to restore corrupted files. At the moment, it costs 0.2 bitcoins ($1140). It will double to 0.4 after five days. Do not remit the payment as the malware is decryptable. Instead, concentrate on Magniber removal. Reimage or Malwarebytes Anti Malware is a reliable security software that can help in a quick malware elimination.

Previous attempts to crack the malicious code

Simone “evilsocket” Margaritelli, the researcher for mobile security company Zimperium, managed to create a decryption tool that might help to restore files after the Magniber attack. However, in order to use it, victims have to know the AES key.

According to the researcher, the decryptor should work if victims were infected from a non-Korean IP address or they cannot connect to Command & Control (C&C) server. These people should know the hardcoded key and IV which should be included into the ransomware’s code.

A South Korea-based security expert team released new decryptors

At the end of March 2018, security researchers from AhnLab released multiple decryptors for different types of Magniber virus. The recovery tool functions based on an encryption bug that was left out by hackers.

Below you can see the table showing which versions of Magniber ransomware can be now decrypted:

Decrypter release date Recoverable file extension Victim Key Magniber payment site vector  Download Link
 3/30  kympzmzw  Jg5jU6J89CUf9C55  i9w97ywz50w59RQY
 3/30  owxpzylj  u4p819wh1464r6J9  mbfRHUlbKJJ7024P
 3/30  prueitfik  EV8n879gAC6080r6  Z123yA89q3m063V9
 3/31 rwighmoz   BF16W5aDYzi751NB  B33hQK9E6Sc7P69B
 3/31  bnxzoucsx  E88SzQ33TRi0P9g6  Bo3AIJyWc7iuOp91
 3/31  tzdbkjry n9p2n9Io32Br75pN  ir922Y7f83bb7G12
 4/1  iuoqetgb  QEsN9KZXSp61P956 lM174P1e6J24bZt1
 4/1 pgvuuryti   KHp4217jeDx019Uk  A4pTQ6886b401JR5
 4/2  zpnjelt  LyAAS6Ovr647GO65  nS3A41k9pccn03J2
 4/2  gnhnzhu  I0727788KuT5kAqL  sCnHApaa61l5U2R0
 4/3  hssjfbd  u5f1d693LGkEgX07  kV35Z1K3JB7z6P06
 4/3  ldolfoxwu  i24720y16f10qJ21  fX5U9Z6A2j8ZUvkO
 4/3  zskgavp  nuu9WO56Gc0N5hn7  ASY0d6dlyrEH6385
 4/3  gwinpyizt  dcQOje3dzW469125  T5438Nl5VI62XxM8

Security experts seem to release new versions in short intervals. Thus, this information might be outdated really soon. To check for the latest releases, check AhnLab's website.

Magniber virus decryption
South Korean security team managed to crack malicious code

Cerber and Magniber analogies

Though it uses the same payment site, its source code seems to be much less elaborate than Cerber‘s. Therefore, it gives hope that the virus can be decrypted[6]. After infiltrating the system, the malware encodes data and appends either .ihsdj or .kgpvwnr extension. Furthermore, it will open the ransom file called as READ_ME_FOR_DECRYPT_[id].txt file.

It contains the typical text explaining that all documents, photos, and databases have been encrypted. The very manner of the written text slightly differs, though, in contrast to the original Cerber’s note.

Furthermore, Magniber virus manifests a peculiar feature. Usually, ransomware threats assign the infected devices user’s ID. Furthermore, affected users have to enter the code into an indicated Tor website in order to proceed with data decryption.

On the other hand, Magniber crypto-malware directs users to a subdomain, containing the victim’s ID, of the payment site. It is divided into four sections: Home page, Support, Decrypt 1 file for FREE, and Reload content page.

The crypto-virus also evades certain directories when looking for encryptable files. As common for ransomware, it skips Program Files, Recycle Bin, local settings, and certain AppData subfolders. Furthermore, the malware has ability to change payment bitcoin address if it identifies an URL with a different victim’s ID.

Magnitude exploit kit was used to spread crypto-virus

As previously mentioned, at the moment, the malware is spread with the assistance of Magnitude exploit kit. It targets a particular CVE-2016-0189 vulnerability in Internet Explorer[7]. This flaw has been fixed already. Thus, if you are using the browser, make sure it is updated.

If the exploit kit detects the vulnerability in a user’s browser, the kit directs them to a fraudulent website which is customized according to a victim geolocation. Such sites are likely to include a link. Activating it would download the malware and begin Magniber hijack.

At the moment, the malware only targets South Korea, but soon it may extend its activities in other East Asian countries, for instance, Japanese[8] sites. Thus, make a rush to remove Magniber.

Eliminate Magniber virus and then proceed with the file recovery

Though the malware tries to persuade that it is the latest Cerber version, differences in the operation mode and source code trigger speculations whether the developers are the same. Though security experts state that the malware is Cerber in fact, less elaborate source code contradicts such statement.

In any case, the malware elimination should be your top priority. Do not waste time on meddling with the virus manually. Install a security tool, for instance, Reimage or Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus, to remove Magniber virus. The virus might prevent you from starting security software. In that case, boot the system in Safe Mode and launch the program. Below instructions display further instructions how to do it. Only when Magniber removal is complete, proceed to data recovery. 

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More information about this program can be found in Reimage review.
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To remove Magniber virus, follow these steps:

Remove Magniber using Safe Mode with Networking

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Magniber

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Magniber removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Magniber using System Restore

If, by any chance, you cannot boot the device into Safe Mode, perform System Restore. It should grant you access to the security tool. Likewise, you will be able to remove Magniber virus.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Magniber. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Magniber removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Magniber from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

The official Magniber decryptor can help to restore file, if you know the AES key. Otherwise, you will not be able to take advantage of this tool. However, you can try alternative recovery methods.

If your files are encrypted by Magniber, you can use several methods to restore them:

Data Recovery Pro method

Note that backing your files is crucial especially at times of ransomware infiltration. If you did not create them, try this program. It might help you recover some files.

The usefulness of Shadow Explorer

This utility creates the copies of original files based on shadow volume copies, which are automatically generated by the operating system. There is no information whether Magniber crypto-malware deletes them in advance. However, regarding Cerber's feature to delete them, the former virus might do so in the future as well.

  • Download Shadow Explorer (;
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Magniber decryptors

As we already mentioned, South Korean security team managed to create several decryptors for Magniber virus. You can find the full list above, or download them from the official website.

In case decryptors created by AhnLab do not work for you, you can try the older version, but it only helps to decrypt files encoded by the hardcoded version of the ransomware. It means you have to know the key and IV that are necessary in order to use the decryption software. You can download a decryptor here.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Magniber and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Alice Woods
Alice Woods - Likes to teach users about virus prevention

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