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A sophisticated cyber espionage campaign attributed to the PRC-nexus threat actor UNC6384 targeted diplomats in Southeast Asia and other global entities. The attack chain involved hijacking web traffic through a captive portal redirect to deliver malware disguised as software updates. The multi-stage attack utilized advanced social engineering, adversary-in-the-middle techniques, and evasion tactics. The malware payload, SOGU.SEC backdoor, was deployed through a digitally signed downloader (STATICPLUGIN) and a side-loaded DLL (CANONSTAGER). The campaign demonstrated the evolving capabilities of PRC-nexus threat actors, employing stealthy tactics to avoid detection and leveraging legitimate Windows features for malicious purposes.

The PRC-Nexus espionage campaign, attributed to the UNC6384 threat actor group linked to the People's Republic of China (PRC), represents a sophisticated and multi-stage cyber espionage operation primarily targeting diplomats in Southeast Asia and other global entities. The attack chain begins with hijacking web traffic through captive portal redirects, a technique often used in public or semi-public Wi-Fi environments to intercept and manipulate user connections. This redirection delivers malware disguised as legitimate software updates, leveraging advanced social engineering tactics to deceive targets into executing malicious payloads. The campaign employs a digitally signed downloader named STATICPLUGIN, which enhances the malware's stealth by exploiting trusted Windows code-signing mechanisms, thereby evading traditional signature-based detection. Following this, a side-loaded DLL called CANONSTAGER is used to execute the SOGU.SEC backdoor, a malware payload that enables persistent remote access and espionage capabilities. The attackers utilize adversary-in-the-middle techniques to intercept and manipulate network traffic, combined with in-memory execution and evasion tactics to avoid detection by endpoint security solutions. The campaign also leverages legitimate Windows features and processes (e.g., DLL side-loading, signed binaries) to blend malicious activity with normal system operations, complicating detection and response efforts. The use of multiple MITRE ATT&CK techniques such as T1033 (System Owner/User Discovery), T1218.011 (Signed Binary Proxy Execution: Regsvr32), T1055 (Process Injection), and T1574.002 (DLL Side-Loading) indicates a high level of operational sophistication and adaptability. Overall, this campaign exemplifies the evolving capabilities of PRC-linked threat actors in conducting stealthy, targeted espionage against high-value diplomatic targets through a combination of network manipulation, social engineering, and advanced malware deployment.

Detailed information about PRC-Nexus Espionage Campaign Hijacks Web Traffic to Target Diplomats. Get real-time updates, technical details, and mitigation strate

PRC-Nexus Espionage Campaign Hijacks Web Traffic to Target Diplomats - Live Threat Intelligence - Threat Radar | OffSeq.com

PRC-Nexus Espionage Campaign Hijacks Web Traffic to Target Diplomats

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