Tag: backdoor
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Security Advisory Regarding BRICKSTORM
Tags: advisory, backdoor, crowdstrike, cyber, cybersecurity, infrastructure, malware, mandiant, threat, vmware, windowsExecutive Summary On December 5th, 2025 the US’s Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency, and Canada’s Cyber Security Centre released a joint malware report on BRICKSTORM, a backdoor targeting VMware vSphere and Windows environments. The suspected threat actor(s), tracked as UNC5221 by Mandiant and WARP PANDA by CrowdStrike, are identified as […]…
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Security Advisory Regarding BRICKSTORM
Tags: advisory, backdoor, crowdstrike, cyber, cybersecurity, infrastructure, malware, mandiant, threat, vmware, windowsExecutive Summary On December 5th, 2025 the US’s Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency, and Canada’s Cyber Security Centre released a joint malware report on BRICKSTORM, a backdoor targeting VMware vSphere and Windows environments. The suspected threat actor(s), tracked as UNC5221 by Mandiant and WARP PANDA by CrowdStrike, are identified as […]…
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Security Advisory Regarding BRICKSTORM
Tags: advisory, backdoor, crowdstrike, cyber, cybersecurity, infrastructure, malware, mandiant, threat, vmware, windowsExecutive Summary On December 5th, 2025 the US’s Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency, and Canada’s Cyber Security Centre released a joint malware report on BRICKSTORM, a backdoor targeting VMware vSphere and Windows environments. The suspected threat actor(s), tracked as UNC5221 by Mandiant and WARP PANDA by CrowdStrike, are identified as […]…
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xHunt APT Exploits Microsoft Exchange and IIS to Deploy Custom Backdoors
xHunt, a sophisticated cyber-espionage group with a laser focus on organizations in Kuwait, has continued to demonstrate advanced capabilities in infiltrating critical infrastructure. The group’s persistent, multi-year campaigns targeting the shipping, transportation, and government sectors underscore the evolving threat landscape facing Middle Eastern enterprises. Since its first documented operations in July 2018, xHunt has refined…
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ValleyRAT Malware Evades Windows 11 Security with Stealthy Driver Install
Check Point Research (CPR) has published a comprehensive analysis of ValleyRAT, a widely distributed backdoor also known as Winos/Winos4.0, revealing its sophisticated modular architecture and dangerous kernel-mode rootkit capabilities. The research demonstrates how the malware’s developers possess deep expertise in Windows internals and successfully bypass modern security protections on fully updated Windows 11 systems. The…
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ValleyRAT Malware Evades Windows 11 Security with Stealthy Driver Install
Check Point Research (CPR) has published a comprehensive analysis of ValleyRAT, a widely distributed backdoor also known as Winos/Winos4.0, revealing its sophisticated modular architecture and dangerous kernel-mode rootkit capabilities. The research demonstrates how the malware’s developers possess deep expertise in Windows internals and successfully bypass modern security protections on fully updated Windows 11 systems. The…
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Attackers Worldwide are Zeroing In on React2Shell Vulnerability
Bad actors that include nation-state groups to financially-motivated cybercriminals from across the globe are targeting the maximum-severity but easily exploitable React2Shell flaw, with threat researchers see everything from probes and backdoors to botnets and cryptominers. First seen on securityboulevard.com Jump to article: securityboulevard.com/2025/12/attackers-worldwide-are-zeroing-in-on-react2shell-vulnerability/
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Attackers Worldwide are Zeroing In on React2Shell Vulnerability
Bad actors that include nation-state groups to financially-motivated cybercriminals from across the globe are targeting the maximum-severity but easily exploitable React2Shell flaw, with threat researchers see everything from probes and backdoors to botnets and cryptominers. First seen on securityboulevard.com Jump to article: securityboulevard.com/2025/12/attackers-worldwide-are-zeroing-in-on-react2shell-vulnerability/
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NANOREMOTE Malware Uses Google Drive API for Hidden Control on Windows Systems
Cybersecurity researchers have disclosed details of a new fully-featured Windows backdoor called NANOREMOTE that uses the Google Drive API for command-and-control (C2) purposes.According to a report from Elastic Security Labs, the malware shares code similarities with another implant codenamed FINALDRAFT (aka Squidoor) that employs Microsoft Graph API for C2. FINALDRAFT is attributed to a First…
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NANOREMOTE Malware Uses Google Drive API for Hidden Control on Windows Systems
Cybersecurity researchers have disclosed details of a new fully-featured Windows backdoor called NANOREMOTE that uses the Google Drive API for command-and-control (C2) purposes.According to a report from Elastic Security Labs, the malware shares code similarities with another implant codenamed FINALDRAFT (aka Squidoor) that employs Microsoft Graph API for C2. FINALDRAFT is attributed to a First…
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WIRTE Leverages AshenLoader Sideloading to Install the AshTag Espionage Backdoor
An advanced persistent threat (APT) known as WIRTE has been attributed to attacks targeting government and diplomatic entities across the Middle East with a previously undocumented malware suite dubbed AshTag since 2020.Palo Alto Networks is tracking the activity cluster under the name Ashen Lepus. Artifacts uploaded to the VirusTotal platform show that the threat actor…
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WIRTE Leverages AshenLoader Sideloading to Install the AshTag Espionage Backdoor
An advanced persistent threat (APT) known as WIRTE has been attributed to attacks targeting government and diplomatic entities across the Middle East with a previously undocumented malware suite dubbed AshTag since 2020.Palo Alto Networks is tracking the activity cluster under the name Ashen Lepus. Artifacts uploaded to the VirusTotal platform show that the threat actor…
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Microsoft Patch Tuesday 2025 Year in Review
Tags: apt, attack, backdoor, cve, cyber, cybercrime, dos, exploit, flaw, malware, microsoft, ransomware, rce, remote-code-execution, service, software, threat, update, vulnerability, zero-dayMicrosoft addressed over 1,100 CVEs as part of Patch Tuesday releases in 2025, including 40 zero-day vulnerabilities. Key takeaways: Microsoft’s 2025 Patch Tuesday releases addressed 1,130 CVEs. This is the second year in a row where the CVE count was over 1,000. Elevation of Privilege vulnerabilities accounted for 38.3% of all Patch Tuesday vulnerabilities in…
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Microsoft Patch Tuesday 2025 Year in Review
Tags: apt, attack, backdoor, cve, cyber, cybercrime, dos, exploit, flaw, malware, microsoft, ransomware, rce, remote-code-execution, service, software, threat, update, vulnerability, zero-dayMicrosoft addressed over 1,100 CVEs as part of Patch Tuesday releases in 2025, including 40 zero-day vulnerabilities. Key takeaways: Microsoft’s 2025 Patch Tuesday releases addressed 1,130 CVEs. This is the second year in a row where the CVE count was over 1,000. Elevation of Privilege vulnerabilities accounted for 38.3% of all Patch Tuesday vulnerabilities in…
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Microsoft Patch Tuesday 2025 Year in Review
Tags: apt, attack, backdoor, cve, cyber, cybercrime, dos, exploit, flaw, malware, microsoft, ransomware, rce, remote-code-execution, service, software, threat, update, vulnerability, zero-dayMicrosoft addressed over 1,100 CVEs as part of Patch Tuesday releases in 2025, including 40 zero-day vulnerabilities. Key takeaways: Microsoft’s 2025 Patch Tuesday releases addressed 1,130 CVEs. This is the second year in a row where the CVE count was over 1,000. Elevation of Privilege vulnerabilities accounted for 38.3% of all Patch Tuesday vulnerabilities in…
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China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud
The post China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud appeared first on Daily CyberSecurity. First seen on securityonline.info Jump to article: securityonline.info/chinas-warp-panda-apt-deploys-brickstorm-backdoor-to-hijack-vmware-vcenter-esxi-and-azure-cloud/
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China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud
The post China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud appeared first on Daily CyberSecurity. First seen on securityonline.info Jump to article: securityonline.info/chinas-warp-panda-apt-deploys-brickstorm-backdoor-to-hijack-vmware-vcenter-esxi-and-azure-cloud/
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China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud
The post China’s WARP PANDA APT Deploys BRICKSTORM Backdoor to Hijack VMware vCenter/ESXi and Azure Cloud appeared first on Daily CyberSecurity. First seen on securityonline.info Jump to article: securityonline.info/chinas-warp-panda-apt-deploys-brickstorm-backdoor-to-hijack-vmware-vcenter-esxi-and-azure-cloud/
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React2Shell Exploitation Delivers Crypto Miners and New Malware Across Multiple Sectors
React2Shell continues to witness heavy exploitation, with threat actors leveraging the maximum-severity security flaw in React Server Components (RSC) to deliver cryptocurrency miners and an array of previously undocumented malware families, according to new findings from Huntress.This includes a Linux backdoor called PeerBlight, a reverse proxy tunnel named CowTunnel, and a Go-based First seen on…
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SafeSplit: A Novel Defense Against Client-Side Backdoor Attacks In Split Learning
Session 5C: Federated Learning 1 Authors, Creators & Presenters: Phillip Rieger (Technical University of Darmstadt), Alessandro Pegoraro (Technical University of Darmstadt), Kavita Kumari (Technical University of Darmstadt), Tigist Abera (Technical University of Darmstadt), Jonathan Knauer (Technical University of Darmstadt), Ahmad-Reza Sadeghi (Technical University of Darmstadt) PAPER SafeSplit: A Novel Defense Against Client-Side Backdoor Attacks in…
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PeerBlight Linux Malware Abuses React2Shell for Proxy Tunneling
Tags: backdoor, control, cve, cyber, cybersecurity, exploit, linux, malware, network, remote-code-execution, vulnerabilityCybersecurity researchers have uncovered a sophisticated Linux malware campaign exploiting the critical React2Shell vulnerability (CVE-2025-55182) to deploy multiple post-exploitation payloads. A newly identified backdoor dubbed >>PeerBlight
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PeerBlight Linux Malware Abuses React2Shell for Proxy Tunneling
Tags: backdoor, control, cve, cyber, cybersecurity, exploit, linux, malware, network, remote-code-execution, vulnerabilityCybersecurity researchers have uncovered a sophisticated Linux malware campaign exploiting the critical React2Shell vulnerability (CVE-2025-55182) to deploy multiple post-exploitation payloads. A newly identified backdoor dubbed >>PeerBlight
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Exploitation Efforts Against Critical React2Shell Flaw Accelerate
The exploitation efforts by China-nexus groups and other bad actors against the critical and easily abused React2Shell flaw in the popular React and Next.js software accelerated over the weekend, with threats ranging from stolen credentials and initial access to downloaders, crypto-mining, and the NoodleRat backdoor being executed. First seen on securityboulevard.com Jump to article: securityboulevard.com/2025/12/exploitation-efforts-against-critical-react2shell-flaw-accelerate/
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Exploitation Efforts Against Critical React2Shell Flaw Accelerate
The exploitation efforts by China-nexus groups and other bad actors against the critical and easily abused React2Shell flaw in the popular React and Next.js software accelerated over the weekend, with threats ranging from stolen credentials and initial access to downloaders, crypto-mining, and the NoodleRat backdoor being executed. First seen on securityboulevard.com Jump to article: securityboulevard.com/2025/12/exploitation-efforts-against-critical-react2shell-flaw-accelerate/
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AI-Driven Tools Uncover GhostPenguin Backdoor Attacking Linux Servers
A sophisticated Linux backdoor named GhostPenguin has been discovered by Trend Micro Research, evading detection for over four months after its initial submission to VirusTotal in July 2025. The threat represents a new breed of stealthy malware designed to maintain a low profile while delivering comprehensive remote access and file system manipulation capabilities to threat…
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AI-Driven Tools Uncover GhostPenguin Backdoor Attacking Linux Servers
A sophisticated Linux backdoor named GhostPenguin has been discovered by Trend Micro Research, evading detection for over four months after its initial submission to VirusTotal in July 2025. The threat represents a new breed of stealthy malware designed to maintain a low profile while delivering comprehensive remote access and file system manipulation capabilities to threat…
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Über Telegram: Student finanziert sein Studium durch Verkauf von Backdoors
Tags: backdoorEin Student aus Bangladesch verkauft auf Telegram Zugänge zu kompromittierten Servern. Er behauptet, das Geld für seine Bildung zu brauchen. First seen on golem.de Jump to article: www.golem.de/news/ueber-telegram-student-finanziert-sein-studium-durch-verkauf-von-backdoors-2512-203014.html
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MuddyWater Deploys UDPGangster Backdoor in Targeted Turkey-Israel-Azerbaijan Campaign
The Iranian hacking group known as MuddyWater has been observed leveraging a new backdoor dubbed UDPGangster that uses the User Datagram Protocol (UDP) for command-and-control (C2) purposes.The cyber espionage activity targeted users in Turkey, Israel, and Azerbaijan, according to a report from Fortinet FortiGuard Labs.”This malware enables remote control of compromised systems by allowing First…
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Chinese State Hackers Use New BRICKSTORM Malware Against VMware Systems
CISA, NSA, and Canadian Cyber Centre warn that PRC state-sponsored hackers are using BRICKSTORM, a stealthy Go-based backdoor, for long-term espionage in Government and IT networks. First seen on hackread.com Jump to article: hackread.com/chinese-state-hackers-brickstorm-vmware-systems/
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China Hackers Using Brickstorm Backdoor to Target Government, IT Entities
Chinese-sponsored groups are using the popular Brickstorm backdoor to access and gain persistence in government and tech firm networks, part of the ongoing effort by the PRC to establish long-term footholds in agency and critical infrastructure IT environments, according to a report by U.S. and Canadian security offices. First seen on securityboulevard.com Jump to article:…