Kazuar is no longer just a backdoor you remove from one machine and move on. Microsoft says Secret Blizzard has turned it into a modular P2P botnet, which keeps covert access alive even when individual hosts are taken out.
Microsoft describes Kernel, Bridge, and Worker roles, with restricted external communications through a single elected leader and fallback C2 paths. The targeting remains focused on government and diplomatic networks in Europe and Central Asia, where the goal is long-term intelligence collection.
The shift matters because cleanup on one endpoint may not end the intrusion if peers remain connected. The real risk is a durable espionage foothold that is built to survive partial disruption.