Wednesday, November 6, 2024
HomeRansomwareBeware!! Magniber Ransomware Delivered via Microsoft Edge and Google Chrome as an...

Beware!! Magniber Ransomware Delivered via Microsoft Edge and Google Chrome as an Update

Published on

Malware protection

In an ongoing campaign, the threat actors are distributing Magniber ransomware as an update through modern web browsers.

Cybersecurity researchers at ASEC have closely monitored Magniber and reported that to deploy this ransomware the operators behind it are actively exploiting the Internet Explorer (IE) vulnerabilities for the last couple of years.  

But, now apart from Internet Explorer (IE), currently, the hackers are also exploiting the modern web browsers:- 

- Advertisement - SIEM as a Service
  • Microsoft Edge
  • Google Chrome

Technical Analysis

In the image below the distribution pages are shown that are opened in Microsoft Edge and Google Chrome, prompting users to install the fake update package with “.appx” extension. 

This fake Chrome or Edge’s Windows update package with .appx extension contains an authentic certificate which makes it look legit and allows the installation of the fake package.

Later, in the child paths of C:\Program Files\WindowsApps when the fake downloaded APPX package was executed, it automatically puts the maliciously crafted EXE and DLL files with the following name:-

  • For EXE file: wjoiyyxzllm.exe
  • For DLL file: wjoiyyxzllm.dll

Now here at this stage, the wjoiyyxzllm.exe file loads the wjoiyyxzllm.dll to execute a distinct function that is dubbed as “mbenooj.” After completing these stages now the Magniber ransomware gets deployed from the memory of wjoiyyxzllm.exe.

Once deployed, the ransomware starts encrypting all the files present on the user’s system and leaves a ransom note after completing the encryption procedure.

Now if you are thinking that why “APPX” files were chosen by the threat actors? They chose the APPX files due to their wide usage. However, in the below video you can see the whole thing in action.

Moreover, if anyone wants to decrypt the files encrypted by Magniber ransomware for free of cost then it’s not possible to do so. Before encrypting the system the Magniber ransomware do not steal any files, since it did not embrace the double extortion tactic in its operation. 

So, for now, the best solution to mitigate such attacks is to back up the data on a regular basis.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity updates

Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Latest articles

Researchers Detailed Credential Abuse Cycle

The United States Department of Justice has unsealed an indictment against Anonymous Sudan, a...

Rise Of Ransomware-As-A-Service Leads To Decline Of Custom Tools

Ransomware-as-a-Service (RaaS) platforms have revolutionized the ransomware market.Unlike traditional standalone ransomware sales, RaaS...

North Korean Hackers Employing New Tactic To Acruire Remote Jobs

North Korean threat actors behind the Contagious Interview and WageMole campaigns have refined their...

CRON#TRAP Campaign Attacks Windows Machine With Weaponized Linux Virtual Machine

Weaponized Linux virtual machines are used for offensive cybersecurity purposes, such as "penetration testing"...

Free Webinar

Protect Websites & APIs from Malware Attack

Malware targeting customer-facing websites and API applications poses significant risks, including compliance violations, defacements, and even blacklisting.

Join us for an insightful webinar featuring Vivek Gopalan, VP of Products at Indusface, as he shares effective strategies for safeguarding websites and APIs against malware.

Discussion points

Scan DOM, internal links, and JavaScript libraries for hidden malware.
Detect website defacements in real time.
Protect your brand by monitoring for potential blacklisting.
Prevent malware from infiltrating your server and cloud infrastructure.

More like this

Rise Of Ransomware-As-A-Service Leads To Decline Of Custom Tools

Ransomware-as-a-Service (RaaS) platforms have revolutionized the ransomware market.Unlike traditional standalone ransomware sales, RaaS...

A Massive Hacking Toolkit From “You Dun” Threat Group Developed To Lauch Massive Cyber Attack

The "You Dun" hacking group exploited vulnerable Zhiyuan OA software using SQL injection, leveraging...

Embargo Ransomware Actors Abuses Safe Mode To Disable Security Solutions

In July 2024, the ransomware group Embargo targeted US companies using the malicious loader...