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Magniber ransomware

Magniber ransomware

Aliases: My Decryptor

Category: Malware

Type: Ransomware

Platforms: Windows

Variants: There are several evolutions and variants of Magniber ransomware, each with slight modifications in its encryption method, ransom note, and distribution technique. These variants are the result of constant updates in an effort to evade detection by security software.

Damage potential: Magniber encrypts data on the affected device, making it inaccessible until a ransom is paid. It might also delete or steal the data and leak it.


Magniber ransomware is a type of malware that primarily targets Windows operating systems. Like all ransomware, it encrypts the victim’s files and demands a ransom for their decryption. When it was first detected in 2017, it targeted only Asian countries. However, it spread to other countries as well, evolving quickly and adapting its encryption techniques and infection tactics to evade detection and override protection software. Magniber is also capable of spreading by itself by exploiting system vulnerabilities, and it constantly updates its encryption algorithms to counter decryption tools developed by cybersecurity researchers. These features make it a particularly dangerous and prevalent threat.

Possible symptoms

The main symptom of a Magniber infection is file encryption. The ransomware encrypts files stored on desktops, laptops, and servers, making them inaccessible.

It also leaves Text or HTML files with detailed instructions on how to pay the ransom and contact the attackers. Some versions change the desktop wallpaper to include that message.

Sources of the infection

  • Magnitude exploit kit. Originally, Magniber was distributed primarily through the Magnitude exploit kit that used browser and plugin vulnerabilities to install the ransomware through drive-by downloads. It required zero user interaction to install the malware. Victims can also unknowingly download Magniber by visiting compromised or malicious websites that also download the exploit kit in the background.
  • Phishing emails. Attackers may distribute Magniber through phishing emails containing malicious links or attachments.
  • Fake security software updates. Victims see a flashy banner online, informing them that their security software is outdated and needs to be updated. If the user downloads the ZIP file and runs it, it installs Magniber on the device.


Ransomware attacks can be devastating for businesses and individuals alike, causing severe disruption and financial loss. Here’s how to protect your devices from Magniber ransomware:

  • Regularly back up files. Being infected with Magniber, like other ransomware types, means that you will likely lose all your files. Having them backed up will help you limit the damage.
  • Keep systems up to date. Attackers look for security vulnerabilities as a way to enter the system. Install updates as soon as they’re available to patch up these vulnerabilities.
  • Use antimalware software. Threat Protection is an advanced NordVPN feature that blocks malicious sites, intrusive web trackers, and annoying ads. Plus, it checks files for malware during download, helping you avoid phishing attacks altogether.


If you have all of your files backed up, the easiest way to remove the ransomware is to perform a full system wipe and restore your data from backup. Alternatively, some decryption tools might work on decrypting your files. We recommend contacting a professional to help you restore your data. Remember — paying the ransom is not a guarantee that you will get the decryption key, so it’s better to find other ways to regain control over your device.

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