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Nimbus Manticore Intensifies Cyber-Espionage in Europe

🔍 Check Point Research reports that Iranian-linked actor Nimbus Manticore has escalated cyber-espionage operations across Western Europe, with heightened targeting of organizations in Denmark, Sweden and Portugal. Attackers impersonate recruiters and use convincing fake career portals to deliver personalized credentials and malicious archives. The campaign leverages evolved backdoors—first seen as Minibike, now observed as MiniJunk and MiniBrowse—and employs multi-stage DLL sideloading into legitimate Windows binaries, including Microsoft Defender components, alongside valid code-signing certificates and compiler-level obfuscation to evade detection. Infrastructure hosted via Azure App Service and shielded by Cloudflare provides redundancy and rapid command-and-control recovery.