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From Fake Purchase Orders to Remote Access: Analyzing the JS.MonoGlyphRAT Threat to US Enterprises

A previously unidentified cyberattack is quietly spreading through US businesses — and most security tools are not catching it. Researchers at ANY.RUN have identified a new backdoor called JS.MonoGlyphRAT, an advanced piece of malware delivered as an ordinary-looking JavaScript file disguised as a purchase order, quote, or business proposal. Once an employee opens the file,…

Russia-aligned crime group Greyvibe extensively uses AI in attacks

Researchers have uncovered a previously undocumented Russian group that makes extensive use of large language models (LLMs) in its attacks against private, government, and military organizations in Ukraine. It uses a variety of attack vectors along with custom malware, with the goal of intelligence gathering for the ongoing war. Dubbed Greyvibe by researchers from WithSecure,…

New Russian-Linked GREYVIBE Targets Ukraine with AI-Powered Cyberattacks

A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is assessed to be a Russian-speaking group operating broadly in the Russian time zone, with the activities aligning with Kremlin state interests, specifically when it comes to

JINX-0164 Targets Cryptocurrency Firms with Fake Recruiter Lures and macOS Malware

A new campaign orchestrated by a previously undocumented threat actor has targeted cryptocurrency organizations with an aim to facilitate digital asset theft using recruitment-themed social engineering and bespoke macOS malware. “These campaigns leveraged sophisticated social engineering techniques, custom macOS malware, and deep targeting of CI/CD infrastructure,” Wiz researchers Shira Ayal,

Microsoft’s new AI system finds 16 Windows flaws, including four critical RCEs

Microsoft has unveiled a new AI-driven vulnerability discovery system that identified 16 previously unknown Windows vulnerabilities, including four critical remote code execution flaws, in what security analysts say could mark a major shift in how software vulnerabilities are discovered and remediated. The system, codenamed MDASH, was developed by Microsoft’s Autonomous Code Security team alongside the…

Microsoft’s new AI system finds 16 Windows flaws, including four critical RCEs

Microsoft has unveiled a new AI-driven vulnerability discovery system that identified 16 previously unknown Windows vulnerabilities, including four critical remote code execution flaws, in what security analysts say could mark a major shift in how software vulnerabilities are discovered and remediated. The system, codenamed MDASH, was developed by Microsoft’s Autonomous Code Security team alongside the…

TCLBANKER Banking Trojan Targets Financial Platforms via WhatsApp and Outlook Worms

Threat hunters have flagged a previously undocumented Brazilian banking trojan dubbed TCLBANKER that’s capable of targeting 59 banking, fintech, and cryptocurrency platforms. The activity is being tracked by Elastic Security Labs under the moniker REF3076. The malware family is assessed to be a major update of the Maverick, which is known to leverage a worm…

Quasar Linux RAT Steals Developer Credentials for Software Supply Chain Compromise

A previously undocumented Linux implant codenamed Quasar Linux RAT (QLNX) is targeting developers’ systems to establish a silent foothold as well as facilitate a broad range of post-compromise functionality, such as credential harvesting, keylogging, file manipulation, clipboard monitoring, and network tunneling. “QLNX targets developers and DevOps credentials across the software supply chain,”

Claude Security enters public beta with Opus 4.7 vulnerability scanning and patching

Claude Security, previously called Claude Code Security, is in public beta for Claude Enterprise customers. Available in Claude.ai, the capability scans codebases for security vulnerabilities and suggests targeted patches for review, helping teams identify and fix issues that might otherwise be missed. Admins can enable it in the admin console. Access for Claude Team and…

Critical cPanel Vulnerability Weaponized to Target Government and MSP Networks

A previously unknown threat actor has been observed targeting government and military entities in Southeast Asia, alongside a smaller cluster of managed service providers (MSPs) and hosting providers in the Philippines, Laos, Canada, South Africa, and the U.S., by exploiting the recently disclosed vulnerability in cPanel. The activity, detected by Ctrl-Alt-Intel on May 2, 2026,…

Quasar Linux (QLNX) – A Silent Foothold in the Supply Chain: Inside a Full-Featured Linux RAT With Rootkit, PAM Backdoor, Credential Harvesting Capabilities

TrendAI™ Research breaks down Quasar Linux (QLNX), a previously undocumented sophisticated Linux RAT with low detection rates. In this blog, we examine a full-featured Linux threat incorporating a rootkit, a PAM backdoor, credential harvesting, and more, revealing how this malware enables stealthy access, persistence, and potential supply-chain attacks.

UNC6692 Impersonates IT Helpdesk via Microsoft Teams to Deploy SNOW Malware

A previously undocumented threat activity cluster known as UNC6692 has been observed leveraging social engineering tactics via Microsoft Teams to deploy a custom malware suite on compromised hosts. “As with many other intrusions in recent years, UNC6692 relied heavily on impersonating IT helpdesk employees, convincing their victim to accept a Microsoft Teams chat invitation from…

China-Linked GopherWhisper Infects 12 Mongolian Government Systems with Go Backdoors

Mongolian governmental institutions have emerged as the target of a previously undocumented China-aligned advanced persistent threat (APT) group tracked as GopherWhisper. “The group wields a wide array of tools mostly written in Go, using injectors and loaders to deploy and execute various backdoors in its arsenal,” Slovakian cybersecurity company ESET said in a report shared…

UAT-10362 Targets Taiwanese NGOs with LucidRook Malware in Spear-Phishing Campaigns

A previously undocumented threat cluster dubbed UAT-10362 has been attributed to spear-phishing campaigns targeting Taiwanese non-governmental organizations (NGOs) and suspected universities to deploy a new Lua-based malware called LucidRook. “LucidRook is a sophisticated stager that embeds a Lua interpreter and Rust-compiled libraries within a dynamic-link library (DLL) to download and

Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025

Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025. The finding, detailed by EXPMON’s Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact (“Invoice540.pdf”) first appeared on the VirusTotal platform on November 28, 2025. A second 

OpenAI Patches ChatGPT Data Exfiltration Flaw and Codex GitHub Token Vulnerability

A previously unknown vulnerability in OpenAI ChatGPT allowed sensitive conversation data to be exfiltrated without user knowledge or consent, according to new findings from Check Point. “A single malicious prompt could turn an otherwise ordinary conversation into a covert exfiltration channel, leaking user messages, uploaded files, and other sensitive content,” the cybersecurity company said in

DeepLoad Malware Uses ClickFix and WMI Persistence to Steal Browser Credentials

A new campaign has leveraged the ClickFix social engineering tactic as a way to distribute a previously undocumented malware loader referred to as DeepLoad. “It likely uses AI-assisted obfuscation and process injection to evade static scanning, while credential theft starts immediately and captures passwords and sessions even if the primary loader is blocked,” ReliaQuest researchers…

Defense Contractor Employee Jailed for Selling 8 Zero-Days to Russian Broker

A 39-year-old Australian national who was previously employed at U.S. defense contractor L3Harris has been sentenced to a little over seven years in prison for selling eight zero-day exploits to Russian exploit broker Operation Zero in exchange for millions of dollars. Peter Williams pleaded guilty to two counts of theft of trade secrets in October…

Google Ties Suspected Russian Actor to CANFAIL Malware Attacks on Ukrainian Orgs

A previously undocumented threat actor has been attributed to attacks targeting Ukrainian organizations with malware known as CANFAIL. Google Threat Intelligence Group (GTIG) described the hack group as possibly affiliated with Russian intelligence services. The threat actor is assessed to have targeted defense, military, government, and energy organizations within the Ukrainian regional and

Apple discloses first actively exploited zero-day of 2026

Apple disclosed a zero-day vulnerability Wednesday that the vendor warned was previously “exploited in an extremely sophisticated attack against specific targeted individuals,” the company said in a security update. The memory-corruption vulnerability — CVE-2026-20700 — affects iPhones and iPads and was exploited on devices running versions of iOS before iOS 26. The Cybersecurity and Infrastructure…

CVE-2026-20700: Apple Patches Zero-Day Exploited in Sophisticated Cyber Attacks

SOC Prime previously highlighted Apple’s actively exploited WebKit zero-day CVE-2025-14174, a case that showed how quickly weaponized iOS flaws can move from targeted activity to real operational risk for organizations and high-value users. That same case later led to additional fixes, with CVE-2025-14174 and CVE-2025-43529 both issued in response to it, reinforcing a familiar pattern…

DKnife targets network gateways in long running AitM campaign

A previously undocumented China-linked adversary-in-the-middle (AitM) framework known as “DKnife” has been identified operating at network gateways, where it intercepts and manipulates in-transit traffic. According to Cisco Talos’ findings, the framework has been active since at least 2019 and remains operational as of early 2026. Rather than targeting endpoints directly, DKnife is deployed at the…

DKnife targets network gateways in long running AitM campaign

A previously undocumented China-linked adversary-in-the-middle (AitM) framework known as “DKnife” has been identified operating at network gateways, where it intercepts and manipulates in-transit traffic. According to Cisco Talos’ findings, the framework has been active since at least 2019 and remains operational as of early 2026. Rather than targeting endpoints directly, DKnife is deployed at the…

Asian State-Backed Group TGR-STA-1030 Breaches 70 Government, Infrastructure Entities

A previously undocumented cyber espionage group operating from Asia broke into the networks of at least 70 government and critical infrastructure organizations across 37 countries over the past year, according to new findings from Palo Alto Networks Unit 42. In addition, the hacking crew has been observed conducting active reconnaissance against government infrastructure associated with…