SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 64

Pierluigi Paganini
September 28, 2025

Malware Newsletter

Brewing Trouble — Dissecting a macOS Malware Campaign  

Large-Scale Attack Targeting Macs via GitHub Pages Impersonating Companies to Attempt to Deliver Stealer Malware

Prompts as Code & Embedded Keys | The Hunt for LLM-Enabled Malware

The Chameleon’s Trap: Inside the Top 3 Exploit Thriving on 60% of Unpatched MS Office Systems         

YiBackdoor: A New Malware Family With Links to IcedID and Latrodectus  

Two Malicious Rust Crates Impersonate Popular Logger to Steal Wallet Keys 

How RainyDay, Turian and a new PlugX variant abuse DLL search order hijacking

Mapping the Infrastructure and Malware Ecosystem of MuddyWater

Operation Rewrite: Chinese-Speaking Threat Actors Deploy BadIIS in a Wide Scale SEO Poisoning Campaign    

ShadowV2: An emerging DDoS for hire botnet 

Another BRICKSTORM: Stealthy Backdoor Enabling Espionage into Tech and Legal Sectors 

RedNovember Targets Government, Defense, and Technology Organizations

Malware Analysis Report RayInitiator & LINE VIPER  

XCSSET evolves again: Analyzing the latest updates to XCSSET’s inventory 

Bearlyfy: The Evolution of a New Ransomware Group and Its Connection to PhantomCore

Updated BO Team Grouping Tools

Deniability by Design: DNS-Driven Insights into a Malicious Ad Network     

Defending against Stegomalware in Deep Neural Networks with Permutation Symmetry

CyberSOCEval: Benchmarking LLMs Capabilities for Malware Analysis and Threat Intelligence Reasoning

DCmal-2025: A Novel Routing-Based DisConnectivity Malware—Development, Impact, and Countermeasures

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, newsletter)

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