Russia-Aligned Hackers Abuse Viber to Target Ukrainian Military and Government

The Russia-aligned threat actor known as UAC-0184 has been observed targeting Ukrainian military and government entities by leveraging the Viber messaging platform to deliver malicious ZIP archives. "This organization has continued to conduct high-intensity intelligence gathering activities again...

Four Threat Clusters Using CastleLoader as GrayBravo Expands Its Malware Service Infrastructure

Four distinct threat activity clusters have been observed leveraging a malware loader known as CastleLoader , strengthening the previous assessment that the tool is offered to other threat actors under a malware-as-a-service MaaS model. The threat actor behind CastleLoader has been assigned the...

ThreatsDay Bulletin: DNS Poisoning Flaw, Supply-Chain Heist, Rust Malware Trick and New RATs Rising

The comfort zone in cybersecurity is gone. Attackers are scaling down, focusing tighter, and squeezing more value from fewer, high-impact targets. At the same time, defenders face growing blind spots — from spoofed messages to large-scale social engineering. This week’s findings show how that...

New Malware Loaders Use Call Stack Spoofing, GitHub C2, and .NET Reactor for Stealth

Cybersecurity researchers have discovered an updated version of a malware loader called Hijack Loader that implements new features to evade detection and establish persistence on compromised systems. "Hijack Loader released a new module that implements call stack spoofing to hide the origin of...

THN Cybersecurity Recap: Top Threats, Tools and News (Oct 14 - Oct 20)

Hi there! Here's your quick update on the latest in cybersecurity. Hackers are using new tricks to break into systems we thought were secure—like finding hidden doors in locked houses. But the good news? Security experts are fighting back with smarter tools to keep data safe. Some big companies...

Researchers Uncover Hijack Loader Malware Using Stolen Code-Signing Certificates

Cybersecurity researchers have disclosed a new malware campaign that delivers Hijack Loader artifacts that are signed with legitimate code-signing certificates. French cybersecurity company HarfangLab, which detected the activity at the start of the month, said the attack chains aim to deploy an...

Cybercriminals Exploit Free Software Lures to Deploy Hijack Loader and Vidar Stealer

Threat actors are luring unsuspecting users with free or pirated versions of commercial software to deliver a malware loader called Hijack Loader, which then deploys an information stealer known as Vidar Stealer. "Adversaries had managed to trick users into downloading password-protected archive...

Hijack Loader Malware Employs Process Hollowing, UAC Bypass in Latest Version

A newer version of a malware loader called Hijack Loader has been observed incorporating an updated set of anti-analysis techniques to fly under the radar. "These enhancements aim to increase the malware's stealthiness, thereby remaining undetected for longer periods of time," Zscaler ThreatLabz...