SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 76

Securityaffairs.Co •Pierluigi Paganini • December 21, 2025

Security Affairs Malware includes a collection of the best articles and research on malware in the international landscape Malware CyberVolk | A Deep Dive into the Hacktivists, Tools and Ransomware Fueling Pro-Russian Cyber Attacks Operation MoneyMount-ISO — Deploying Phantom Stealer via ISO-Mounted Executables Inside GhostPoster: How a PNG Icon Infected 50,000 Firefox Users […]

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Pro-Russian Cyber Attacks Utilizing Malware Tools and Ransomware A series of pro-Russian cyber attacks have been executed using various malware tools, including ransomware. Notably, the operation named MoneyMount-ISO has been identified as deploying Phantom Stealer through ISO-mounted executables, affecting numerous users. Additionally, a PNG icon exploit has led to the infection of 50,000 Firefox users. 2 sources 29

Extracted Entities

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 76

The full story

Extracted Entities

Attack Types (2)

Campaigns (1)

Malware (2)