Ruby Sleet is a sophisticated, North Korean state-aligned advanced persistent threat (APT) group, first identified in 2020, linked to North Korea's Ministry of State Security. The group's primary motivation is intelligence collection, focusing on perceived adversaries like South Korea, the United States, and Japan, as well as obtaining military capabilities information and financial gain through targeted attacks. Ruby Sleet distinguishes itself through significantly increasing the sophistication of its phishing operations, developing custom capabilities for specific targets, and employing supply chain attacks. The group is also known by the aliases CERIUM and APT37, which is further known as ScarCruft and Velvet Chollima, clarifying that groups like Emerald Hurricane and Sapphire Tempest are related but distinct entities.

Aliases del actor

CERIUM

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