Friday, May 24, 2024

Attackers Leverage Sidecar Container Injection Technique To Stay Stealthy

Kubernetes (K8s) is an open-source container orchestration platform designed to automate application container deployment, scaling, and running. 

Containers are isolated software packages that are lightweight and contain everything required for running an app. 

In Kubernetes, a “sidecar” refers to an additional container that runs alongside the main application container in the same pod to enhance its capabilities. 

However, cybersecurity researchers at TrendMicro recently discovered that threat actors can leverage the Sidecar Container injection technique to remain stealthily.

Sidecar Container Injection Technique

Sidecar containers help modularize features and functionalities that do not directly relate to the main application logic but which are necessary for efficient operation.

Document

Integrate ANY.RUN in Your Company for Effective Malware Analysis

Are you from SOC, Threat Research, or DFIR departments? If so, you can join an online community of 400,000 independent security researchers:

  • Real-time Detection
  • Interactive Malware Analysis
  • Easy to Learn by New Security Team members
  • Get detailed reports with maximum data
  • Set Up Virtual Machine in Linux & all Windows OS Versions
  • Interact with Malware Safely

If you want to test all these features now with completely free access to the sandbox:

They have the same lifecycle and a local network with the primary container that follows the single responsibility principle and improves system maintainability.

Here below, we have mentioned the ways to use sidecar containers for logging purposes legitimately:-

  • The sidecar container directs application logs to its standard output:
Streaming sidecar container (Source – Trend Micro)
  • The sidecar container operates a logging agent to retrieve logs from the application container:
Sidecar container with a logging agent (Source – Trend Micro)

The Kubernetes threat matrix provides a structured understanding of the TTPs that may be employed by threat actors against Kubernetes installations as inspired by MITRE ATT&CK

One technique, like MS-TA9011 Sidecar Injection, allows an attacker to inject a malicious sidecar container into a valid pod for unauthorized code execution and hiding operations rather than deploying another pod altogether. 

This is related to MITRE’s Deploy Container (T1610) technique, which allows attackers to deploy containers onto systems they have compromised or gained access to.

They can also compromise the behavior of an already installed sidecar container, install malware, or execute unauthorized binaries such as cryptocurrency miners through API or kubectl tool. 

When threatening Kubernetes clusters, this method helps them remain unnoticed within victims’ infrastructures.

Valid sidecar containers increase the difficulty of managing and detecting compromises in a Kubernetes cluster.

It is essential to consider them as any other container and watch out for strange operations. So, it is advisable to introduce a fresh MITRE ATT&CK technique that concentrates on sidecar injection.

Mitigations And Recommendations

Here below we have mentioned all the mitigations provided by the cybersecurity researchers:-

  • MS-M9003: Adhere to least-privilege principle
  • MS-M9013: Restrict over permissive containers
  • MS-M9005.003: Gate images deployed to Kubernetes cluster

Here below we have mentioned all the recommendations:-

  • Ensure there’s a valid justification for segregating the containers.
  • Aim for concise, modular designs.
  • Be mindful of resource boundaries.

Combat Email Threats with Easy-to-Launch Phishing Simulations: Email Security Awareness Training -> Try Free Demo 

Website

Latest articles

Hackers Weaponizing Microsoft Access Documents To Execute Malicious Program

In multiple aggressive phishing attempts, the financially motivated organization UAC-0006 heavily targeted Ukraine, utilizing...

Microsoft Warns Of Storm-0539’s Aggressive Gift Card Theft

Gift cards are attractive to hackers since they provide quick monetization for stolen data...

Kinsing Malware Attacking Apache Tomcat Server With Vulnerabilities

The scalability and flexibility of cloud platforms recently boosted the emerging trend of cryptomining...

NSA Releases Guidance On Zero Trust Maturity To Secure Application From Attackers

Zero Trust Maturity measures the extent to which an organization has adopted and implemented...

Chinese Hackers Stay Hidden On Military And Government Networks For Six Years

Hackers target military and government networks for varied reasons, primarily related to spying, which...

DNSBomb : A New DoS Attack That Exploits DNS Queries

A new practical and powerful Denial of service attack has been discovered that exploits...

Malicious PyPI & NPM Packages Attacking MacOS Users

Cybersecurity researchers have identified a series of malicious software packages targeting MacOS users.These...
Tushar Subhra Dutta
Tushar Subhra Dutta
Tushar is a Cyber security content editor with a passion for creating captivating and informative content. With years of experience under his belt in Cyber Security, he is covering Cyber Security News, technology and other news.

Free Webinar

Live API Attack Simulation

94% of organizations experience security problems in production APIs, and one in five suffers a data breach. As a result, cyber-attacks on APIs increased from 35% in 2022 to 46% in 2023, and this trend continues to rise.
Key takeaways include:

  • An exploit of OWASP API Top 10 vulnerability
  • A brute force ATO (Account Takeover) attack on API
  • A DDoS attack on an API
  • Positive security model automation to prevent API attacks

Related Articles