EtherHiding
EtherHiding is a technique name referenced by Google Threat Intelligence Group (GTIG), which reported in October that North Korean attackers had been using it since February 2025. GTIG described EtherHiding as hiding malware inside smart contracts and characterized the approach as a new form of bulletproof hosting. Supporting reporting also notes that analysts observed North Korean state-sponsored attackers using similar smart-contract-based techniques. The provided content does not identify a distinct standalone threat actor behind the name beyond its association with North Korean attackers, and no additional aliases or sub-groups are given.
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