Emerging in early September 2025, the Yurei ransomware has swiftly drawn attention for its novel combination of Go-based execution and ChaCha20 encryption. First documented on September 5 when a Sri Lankan food manufacturer fell victim, the threat actor behind Yurei adopted a double-extortion model: encrypting files while exfiltrating sensitive data for additional leverage. Within days, […] The post New Yurei Ransomware With PowerShell Commands Encrypts Files With ChaCha20 Algorithm appeared first on Cyber Security News.

In recent months, security teams have observed a significant increase in sophisticated phishing campaigns leveraging a newly discovered Phishing-as-a-Service (PhaaS) platform dubbed VoidProxy. The operation, first detected in August 2025, combines multiple anti-analysis techniques and adversary-in-the-middle (AitM) capabilities to target Microsoft 365 and Google accounts with unprecedented stealth. Early email lures originate from compromised legitimate […] The post New VoidProxy PhaaS Service Attacking Microsoft 365 and Google Accounts appeared first on Cyber Security News.

A sophisticated malware campaign has emerged that leverages artificial intelligence to create deceptively legitimate applications, marking a significant evolution in cyberthreat tactics. The EvilAI malware family represents a new breed of threats that combines AI-generated code with traditional trojan techniques to infiltrate systems worldwide while maintaining an unprecedented level of stealth. The malware operates by […] The post EvilAI as AI-enhanced Tools to Exfiltrate Sensitive Browser Data and Evade Detections appeared first on Cyber Security News.

A sophisticated malvertising campaign has emerged, exploiting GitHub repositories through dangling commits to distribute malware via fake GitHub Desktop clients. This novel attack vector represents a significant evolution in cybercriminal tactics, leveraging the trust and legitimacy associated with GitHub’s platform to deceive unsuspecting users into downloading malicious software. The campaign operates by promoting compromised GitHub […] The post New Malvertising Campaign Leverages GitHub Repository to Deliver Malware appeared first on Cyber Security News.

A sophisticated backdoor malware known as Backdoor.WIN32.Buterat has emerged as a significant threat to enterprise networks, demonstrating advanced persistence techniques and stealth capabilities that enable attackers to maintain long-term unauthorized access to compromised systems. The malware has been identified targeting government and corporate environments through carefully orchestrated phishing campaigns, malicious email attachments, and trojanized software […] The post Buterat Backdoor Attacking Enterprises to Establish Persistence and Control Endpoints appeared first on Cyber Security News.

Cybersecurity researchers have uncovered a sophisticated malware campaign that exploits SVG (Scalable Vector Graphics) files and email attachments to distribute dangerous Remote Access Trojans, specifically XWorm and Remcos RAT. This emerging threat represents a significant evolution in attack methodologies, as threat actors increasingly turn to non-traditional file formats to bypass conventional security defenses. The campaign […] The post New Malware Attack Leverages SVGs, Email Attachments to Deliver XWorm and Remcos RAT appeared first on Cyber Security News.

The notorious APT-C-24 threat actor group, commonly known as Sidewinder or Rattlesnake, has evolved its attack methodology by deploying sophisticated LNK file-based phishing campaigns targeting government, energy, military, and mining sectors across South Asia. Active since 2012, this advanced persistent threat organization has shifted away from its traditional exploitation of Microsoft Office vulnerabilities, instead embracing […] The post Sidewinder Hacker Group Weaponizing LNK File to Execute Malicious Scripts appeared first on Cyber Security News.

A sudden and definitive statement emerged from the “Scattered LAPSUS$ Hunters 4.0” Telegram channel on September 8, signaling an abrupt end to their public operations. After months of high-profile campaigns targeting major corporations and critical infrastructure, the collective declared a permanent retreat. News of this unexpected decision reverberated through the cybersecurity community, prompting analysts to […] The post Scattered LAPSUS$ Hunters 4.0 Announced That Their Going Dark Permanently appeared first on Cyber Security News.

Since its first appearance earlier this year, the ToneShell backdoor has demonstrated a remarkable capacity for adaptation, toyed with by the Mustang Panda group to maintain an enduring foothold in targeted environments. This latest variant, discovered in early September, arrives concealed within sideloaded DLLs alongside legitimate executables. Delivered via compressed archives purporting to contain innocuous […] The post New ToneShell Backdoor With New Features Leverage Task Scheduler COM Service for Persistence appeared first on Cyber Security News.