threat-intel Mustang Panda Adds Signed Windows Rootkit to CoolClient Backdoor for Stealth The HoneyMyte threat actor (aka Mustang Panda) has updated its CoolClient backdoor with a new, signed Windows kernel-mode rootkit, significantly enhancing its stealth capabilities. This rootkit, implemented through a driver named msagent.sys, allows the CoolClient backdoor to hide processes, files, registry objects, an… The Hacker News · Aug 14, 2026 High MYMOPArootkitkernel-modestealth
threat-intel Stealthy Mistic backdoor linked to ransomware access broker KongTuke A new stealthy backdoor, dubbed Mistic, has been identified as a tool used by the initial access broker KongTuke to facilitate ransomware attacks against organizations in the insurance, education, IT, and professional se… BleepingComputer · Jun 24, 2026 High USbackdoorinitial accessransomware
threat-intel SprySOCKS Windows Variant Abuses Kernel Drivers to Evade Detection A new Windows variant of the SprySOCKS Linux backdoor, developed by the nation-state threat actor FishMonger (also known as Earth Lusca and Aquatic Panda), has been discovered targeting government organizations in Hondur… Dark Reading · Jun 16, 2026 High HNTWTHkernel-driveraptbackdoor
threat-intel China-Linked SprySOCKS Backdoor Expands to Windows with Driver-Based Stealth Researchers have identified new Windows variants of the SprySOCKS backdoor, initially linked to the Chinese state-sponsored threat actor Earth Lusca (also known as Aquatic Panda). These variants, designated WIN_DRV and W… The Hacker News · Jun 16, 2026 High CVE-2023-24932CNTWHUbackdoorwindowsstealth
threat-intel Windows version of SprySOCKS Linux malware used to attack govt orgs Windows variants of the SprySOCKS Linux malware, previously linked to the Earth Lusca threat actor, have been used to target government organizations in Taiwan, Thailand, Pakistan, and Honduras. These variants offer adva… BleepingComputer · Jun 16, 2026 High CVE-2023-24932TWTHPKlinuxstealthbackdoor
malware OnyxC2 Stealer Offers Cybercriminals Enterprise-Grade Theft for $250 a Month The OnyxC2 stealer, offered as a "Malware-as-a-Service" (MaaS) product for $250-$500 per month, is a sophisticated tool designed for enterprise-level credential theft. Developed by BlackFog, it boasts a wide range of tar… SecurityWeek · Jun 11, 2026 High USstealercredential theftmalware-as-a-service
malware Tracking TamperedChef Clusters via Certificate and Code Reuse This report details ongoing activity clusters closely resembling the TamperedChef (EvilAI) malware campaign, which involves trojanized productivity software like PDF editors and calendars. These campaigns utilize malicio… Palo Alto Unit 42 · May 20, 2026 High USpersistencecommand and controltrojan
