In the dynamic landscape of enterprise cybersecurity, remote access tool threat differentiation has emerged as a critical focus area for security teams. The increasing complexity of remote access software—spanning both legitimate administrative utilities and covert Remote Access Trojans (RATs)—necessitates a nuanced approach to detection and analysis. Effective threat differentiation requires more than superficial inspection; it demands in-depth understanding of tool behaviors, communication patterns, and privilege usage. Security professionals must develop robust frameworks for classifying and investigating remote access activities, recognizing that erroneous identification can have significant operational and security repercussions. This guide provides a methodical overview of the principles and investigative techniques essential for confidently distinguishing between RATs and legitimate admin tools, thereby enhancing organizational resilience against evolving cyber threats.