Leftover Lunch: Finding, Hunting and Eradicating Spicy Hot Pot, a Persistent Browser Hijacking Rootkit

The blog post discusses the discovery and analysis of a persistent browser hijacking rootkit called "Spicy Hot Pot," which primarily targets Chinese users by altering user homepages and evading detection through kernel-mode drivers. These drivers stealthily intercept security software callbacks and enable the malware to update itself, making it difficult to remove with conventional methods. CrowdStrike Falcon's detection and response capabilities were employed to identify the infection, revealing that the rootkit was distributed through tools used to illegitimately activate Microsoft products. The post details the technical aspects of the rootkit's operation, its distribution methods, and suggests remediation strategies, emphasizing the importance of monitoring unknown executables and loaded drivers to prevent such threats.

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