North Korean APT37 Unleashes Novel Malware to Target Air-Gapped Systems

North Korean threat group APT37 is using a new multi‑stage toolset to jump air‑gaps and conduct deep surveillance by abusing removable media, Ruby, and cloud services in a campaign Zscaler ThreatLabz tracks as “Ruby Jumper.”​ The campaign’s main goal is to move data and commands between internet‑connected and air‑gapped systems while deploying powerful surveillance backdoors. […]

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