Threats Tagged 'log poisoning'

Beginning in August 2025, a sophisticated intrusion was discovered where attackers used log poisoning techniques to deploy a web shell on vulnerable phpMyAdmin panels. The threat actors exploited misconfigured web applications to plant China Chopper web shells, controlled via AntSword, before deploying Nezha, an open-source monitoring tool, to facilitate remote command execution. This led to the deployment of Ghost RAT on compromised systems. Analysis revealed over 100 compromised machines, predominantly located in Taiwan, Japan, South Korea, and Hong Kong. The attackers demonstrated technical proficiency through multi-stage operations, utilizing AWS and VPS infrastructure, with indicators pointing to China-nexus threat actors. The campaign highlights increasing abuse of legitimate publicly available tools to achieve malicious objectives while maintaining plausible deniability.

MediumMalwareUnited StatesAngolaArgentina+46#phpmyadmin#gh0st rat#china-nexus

A sophisticated cyber intrusion campaign utilizing log poisoning and a new tool called Nezha has been uncovered. The attackers exploited a vulnerable phpMyAdmin interface to deploy a web shell, followed by the installation of Nezha, an open-source server monitoring tool repurposed for malicious activities. The campaign targeted over 100 victims, primarily in Taiwan, Japan, South Korea, and Hong Kong. The threat actors also deployed Ghost RAT, a remote access trojan, for further system compromise. The attack methodology and victimology suggest a China-nexus threat actor, highlighting the need for improved security measures and vigilance against emerging threats.

MediumMalwareGermanyFranceUnited Kingdom+4#log poisoning#nezha#web shell

A sophisticated cyber campaign utilizing the open-source Nezha tool has been discovered targeting vulnerable web applications since August 2025. Attackers gained access through an exposed phpMyAdmin panel, employing creative log poisoning techniques to implant a PHP web shell. The intrusion involved the use of AntSword for server control, followed by the installation of Nezha agent and Ghost RAT malware. This marks the first public report of Nezha being used for web server compromises. The campaign, linked to China-based infrastructure, affected over 100 systems, primarily in Taiwan, Japan, South Korea, and Hong Kong. Attackers used Nezha to disable Windows Defender and deploy Ghost RAT, establishing persistence under the name 'SQLlite'. Recommendations include patching public-facing applications, implementing authentication, and improving detection for post-exploitation activities.

MediumMalwareGermanyFranceUnited Kingdom+4#phpmyadmin#log poisoning#nezha