With the rise of cyber threats, the need for threat analysis utilizing large-scale language models (LLMs) has emerged. This paper presents CyberTeam, a benchmark for enhancing LLM's blue team defense capabilities. CyberTeam models realistic threat hunting workflows, identifies dependencies between analysis tasks, and builds operational modules for each task, enabling LLM to perform threat analysis step-by-step. CyberTeam integrates 30 tasks and nine operational modules to support standardized threat analysis and has been evaluated against leading LLMs and cutting-edge cybersecurity agents. While CyberTeam demonstrates improvements through its standardized design, it also reveals the limitations of open-ended reasoning in real-world threat hunting.