Trusted DesignAn investigation beginning with a single RedLine Stealer C2 server from VMRay UniqueSignal evolved into uncovering a targeted Business Email Compromise campaign against South Korean maritime infrastructure. The analysis started with IP 194.156.79.122 on port 55615, leveraging fingerprinting techniques through FOFA and VirusTotal to identify additional C2 infrastructure. Pivoting through communicating files revealed spear-phishing emails targeting Kangrim Heavy Industries, a major South Korean marine boiler manufacturer. The campaign delivered Formbook malware through impersonated maritime supply chain companies. Further infrastructure analysis identified seven fraudulent domains hosted on TheHost LLC infrastructure, utilizing similar naming patterns and TLS certificates. The attack demonstrates sophisticated BEC tactics combining malware delivery with social engineering, mimicking legitimate business correspondence within the maritime shipping sector.
Created: 2026-07-02
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