Wednesday, April 24, 2024

Microsoft has Takedown the world’s Largest Necurs Botnet that Infected Nine Million Computers Globally

Microsoft has taken down the infamous Necurs botnet that impacted more than nine million computers worldwide. The Necurs botnet is the largest spam and malware botnet.

The botnet is known for distributing several malware particularly the Locky ransomware malware, the botnet believed to be operated from Russia.

The Necurs botnet was first detected in 2012, it primarily acts as a dropper for other malware, between the years 2016 to 2019 the botnet emerges as largets one and responsible for 90% of the malware spread by email worldwide.

Necurs Botnet TakeDown

The world’s largest botnet was taken down as a coordinated operation between Microsoft and partners across 35 countries.

Microsoft said that within a “58-day period in our investigation, for example, we observed that one Necurs-infected computer sent a total of 3.8 million spam emails to over 40.6 million potential victims.”

The botnet is known for conducting various spam attacks such as stock scams, fake pharmaceutical spam email and “Russian dating” scams. Necurs also used for launching DDoS attacks.

The botnet continues to utilize advanced functions to evade security mechanisms placed in the organization.

To take down the botnet operation Microsoft broken down the domain generation algorithm (DGA) technology implemented by Necurs for registering new domains to execute attacks.

In the last 25 months more than six million unique domains registered by the botnet to launch various attacks.

Microsoft reported the domain name’s to the registries around the world so that those domains are blocked from becoming a part of Necurs infrastructure.

BitSight who worked with Microsoft for Necurs malware takedown provides an Infection Telemetry map that shows how a week of Necurs infection telemetry is dispersed geographically.

The authors of the Necurs botnet system implemented a layered approach using a mixture of a centralized and peer-to-peer (P2P) communication channels, here is the Necurs C2 flow.

“By taking control of existing websites and inhibiting the ability to register new ones, we have significantly disrupted the botnet, Microsoft added.

Website

Latest articles

Phishing Attacks Rise By 58% As The Attackers Leverage AI Tools

AI-powered generative tools have supercharged phishing threats, so even newbie attackers can effortlessly create...

Multiple MySQL2 Flaw Let Attackers Arbitrary Code Remotely

The widely used MySQL2 has been discovered to have three critical vulnerabilities: remote Code...

CoralRaider Hacker Evade Antivirus Detections Using Malicious LNK File

This campaign is observed to be targeting multiple countries, including the U.S., Nigeria, Germany,...

Spyroid RAT Attacking Android Users to Steal Confidential Data

A new type of Remote Access Trojan (RAT) named Spyroid has been identified.This...

Researchers Uncover that UK.GOV Websites Sending Data to Chinese Ad Vendor Analysts

Analysts from Silent Push, a data analytics firm, have uncovered several UK government websites...

Ransomware Victims Who Opt To Pay Ransom Hits Record Low

Law enforcement operations disrupted BlackCat and LockBit RaaS operations, including sanctions on LockBit members...

IBM Nearing Talks to Acquire Cloud-software Provider HashiCorp

IBM is reportedly close to finalizing negotiations to acquire HashiCorp, a prominent cloud infrastructure...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

WAAP/WAF ROI Analysis

Mastering WAAP/WAF ROI Analysis

As the importance of compliance and safeguarding critical websites and APIs grows, Web Application and API Protection (WAAP) solutions play an integral role.
Key takeaways include:

  • Pricing models
  • Cost Estimation
  • ROI Calculation

Related Articles