Malware

Pierluigi Paganini April 14, 2026
Fake Claude AI installer abuses DLL sideloading to deploy PlugX

Fake Claude website impersonates Anthropic and delivers PlugX RAT via ZIP download using DLL sideloading. A fake website impersonating Anthropic’s Claude service was found distributing the PlugX remote access trojan, according to Malwarebytes. The rogue site abuses the chatbot’s popularity to trick users into downloading a ZIP archive presented as a “pro version” installer. The […]

Pierluigi Paganini April 13, 2026
CPUID watering hole attack spreads STX RAT malware

Threat actors compromised the CPUID website and spread STX RAT through fake CPU-Z and HWMonitor downloads. Attackers breached the website CPUID and replaced download links for CPU-Z and HWMonitor with malicious files for several hours. Users who downloaded them got infected with the STX RAT, giving attackers remote access to their systems. The short attack […]

Pierluigi Paganini April 12, 2026
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 92

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Thirty-Six Malicious npm Strapi Packages Deploy Redis RCE, Database Theft, and Persistent C2   Malicious LNK Files Distributing a Python-Based Backdoor and Changes in Distribution Techniques (Kimsuky Group)   Hackers Are Attempting to Turn ComfyUI Servers Into a […]

Pierluigi Paganini April 11, 2026
GlassWorm evolves with Zig dropper to infect multiple developer tools

The GlassWorm campaign uses a Zig-based dropper hidden in a fake IDE extension to infect developer tools and compromise systems. The GlassWorm campaign, active since 2025, has evolved from malicious npm packages to large-scale supply chain attacks across GitHub, npm, and VS Code, even deploying RATs via fake browser extensions. In its latest iteration, threat […]

Pierluigi Paganini April 10, 2026
Ransomware attack on ChipSoft knocks EHR services offline across hospitals in the Netherlands and Belgium

Dutch healthcare IT firm ChipSoft suffered a ransomware attack, forcing services and its HiX platform offline, impacting hospitals and patients. ChipSoft, a major Dutch provider of EHR systems, was hit by a ransomware attack that forced it to take its website and digital services offline, disrupting access for hospitals, healthcare providers, and patients. EHR (Electronic […]

Pierluigi Paganini April 10, 2026
UAT-10362 linked to LucidRook attacks targeting Taiwan-based institutions

LucidRook is Lua malware used in phishing attacks on NGOs and universities in Taiwan, linked to UAT-10362, spread via password-protected emails. LucidRook is a new Lua-based malware used in targeted phishing attacks against NGOs and universities in Taiwan. Cisco Talos links it to a skilled group tracked as UAT-10362. In Oct 2025, attackers used password-protected […]

Pierluigi Paganini April 09, 2026
Masjesu botnet targets IoT devices while evading high-profile networks

Masjesu is a stealthy DDoS-for-hire botnet targeting IoT devices, active since 2023 and designed to stay hidden by avoiding high-profile networks. Masjesu is a stealthy botnet active since 2023, advertised as a DDoS-for-hire service. It targets IoT devices like routers and gateways, spanning multiple architectures. Designed for persistence, it executes carefully, avoiding high-profile IP ranges […]

Pierluigi Paganini April 08, 2026
Russia-linked APT28 uses PRISMEX to infiltrate Ukraine and allied infrastructure with advanced tactics

APT28 targets Ukraine and allies with PRISMEX malware, using stealthy techniques for espionage and command-and-control. Russia-linked group APT28 (aka UAC-0001, aka Fancy Bear, Pawn Storm, Sofacy Group, Sednit, BlueDelta, and STRONTIUM) is running a spear-phishing campaign against Ukraine and its allies, deploying a new malware suite called PRISMEX. Active since September 2025, the campaign uses advanced stealth techniques like steganography and […]

Pierluigi Paganini April 07, 2026
Fast-moving Storm-1175 uses new exploits to breach networks and drop Medusa

China-based actor Storm-1175 runs fast ransomware attacks, exploiting new flaws to breach systems and quickly deploy Medusa ransomware. China-based actor Storm-1175 carries out fast, financially driven ransomware attacks by exploiting newly disclosed vulnerabilities before organizations patch them. The group targets exposed systems and quickly moves from initial access to data theft and Medusa ransomware deployment, […]

Pierluigi Paganini April 05, 2026
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 91

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Infiniti Stealer: a new macOS infostealer using ClickFix and Python/Nuitka   Converging Interests: Analysis of Threat Clusters Targeting a Southeast Asian Government RoadK1ll: A WebSocket Based Pivoting Implant    axios Compromised: npm Supply Chain Attack via Dependency Injection   […]