Microsoft has identified Moonstone Sleet, a new North Korean threat actor that employs various tactics, including creating fake companies, distributing trojanized legitimate tools, developing a malicious game, and deploying custom ransomware. This actor combines methods used by other North Korean groups and unique attack methodologies. Initially overlapping with Diamond Sleet, Moonstone Sleet has since established itself as a distinct, well-resourced threat actor targeting companies for financial gain and cyberespionage.

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