APT28 Deploys New HOOKEDGE Backdoor Against European Diplomatic Targets
Between September 2025 and April 2026, Russian state-sponsored threat actor APT28 (Fancy Bear) conducted cyber espionage campaigns against government and diplomatic organizations in Romania, Spain, and Turkey using a previously undocumented backdoor called HOOKEDGE. The lightweight Windows batch script was delivered through macro-enabled Microsoft Word documents with diplomatic-themed lures, representing an evolution of APT28's HEADLACE backdoor with improved evasion capabilities and webhook-based command-and-control infrastructure. This incident highlights the persistent targeting of European diplomatic entities by Russian APT groups amid ongoing geopolitical tensions, demonstrating how threat actors continuously refine lightweight tooling to maintain access while adapting to defensive countermeasures and infrastructure limitations.
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