Latest cybersecurity reporting from selected sources.

Researchers found China’s Daxin rootkit and a new Stupig backdoor on a Taiwan firm’s network, suggesting a stealthy intrusion dating back to 2013. Symantec’s Threat Hunter Team found Daxin running on a compromised host at a Taiwan-based subsidiary of a multinational high-tech manufacturer in 2026. Daxin is a Windows kernel-mode rootkit that Symantec first documented […]

China-linked FishMonger used two SprySOCKS Windows variants that leveraged kernel drivers and the Print Spooler to target governments in four countries. ESET researchers have found two previously undocumented Windows versions of SprySOCKS, a backdoor that the security community had until now treated as Linux-only. Trend Micro first documented the Linux variant in September 2023 and […]

FishMonger, a China-nexus threat group, has deployed an undocumented version of the Linux backdoor against government targets in Honduras, Taiwan, Thailand, and Pakistan.

China-linked SprySOCKS backdoor gains stealthy Windows variants and 30-plus C2 commands

Cybersecurity researchers have flagged two previously undocumented Windows variants of what was believed to be a Linux-only backdoor called SprySOCKS

Researchers Identified Two Undocumented Variants Used Since 2023Eset uncovered two previously undocumented Windows variants of the China-linked SprySocks backdoor tied to FishMonger and iSoon, revealing expanded espionage capabilities, rootkit-based stealth and continued targeting of government organizations across Asia and Central America.

A China-nexus cyber espionage group has been observed deploying a BSD variant of a known backdoor called BRICKSTORM, as well as two other malware families codenamed PLENET (aka GRIMBOLT) and AGENTPSD to target Linux systems

A Chinese espionage group tracked as UNC5221 has been accessing Microsoft 365 environments using the Brickstorm backdoor and previously undocumented malware named Plenet and AgentPSD. [...]

The North Korea-aligned state-sponsored hacking group known as ScarCruft has compromised a video game platform in a supply chain espionage attack, trojanizing its components with a backdoor called BirdCallto likely target ethnic Koreans residing in China

Hacked Infrastructure Delivered Chinese Nation-State Group's Backdoor, Experts WarnThe widely used, open source text-editing software Notepad++ for Windows said attackers exploited a vulnerability to redirect some users to sites that pushed a backdoor onto their system. Security experts have tied the attack to a broader campaign perpetrated by Chinese nation-state actors.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday released details of a backdoor named BRICKSTORM that has been put to use by state-sponsored threat actors from the People's Republic of China (PRC) to maintain long-term persistence on compromised systems

Phantom Taurus demonstrates a deep understanding of Windows environments, including advanced components like IIServerCore, a fileless backdoor that executes in memory to evade detection.

A spear-phishing campaign sent Trojanized versions of legitimate word-processing software to members of the World Uyghur Congress as part of China's continued cyber-espionage activity against the ethnic minority.

NVISO discovered new variants of the BRICKSTORM backdoor, initially designed for Linux, on Windows systems

Threat Actors Deploy Obfuscation Tactics to Targets Windows MachinesLikely Chinese nation-state hackers are targeting European companies using previously unseen malware backdoor variants with advanced network tunneling and evasion capabilities for data theft. Brussels-based security firm Nviso links the campaign to a threat actor tracked as UNC5221.

A new Linux backdoor called 'WolfsBane' has been discovered, believed to be a port of Windows malware used by the Chinese 'Gelsemium' hacking group. [...]

The Chinese-speaking threat actor known as Earth Lusca has been observed using a new backdoor dubbed KTLVdoor as part of a cyber attack targeting an unnamed trading company based in China

Users of Chinese instant messaging apps like DingTalk and WeChat are the target of an Apple macOS version of a backdoor named HZ RAT

The US government worries that Group 42 Holdings, an AI firm based in the United Arab Emirates, could become a backdoor for technology leaks to China.

A previously undocumented cross-platform malware codenamed Noodle RAT has been put to use by Chinese-speaking threat actors either for espionage or cybercrime for years