In today's world, ransomware attacks have become increasingly sophisticated, exploiting advanced techniques to evade traditional security measures and inflicting severe damage on organizations across multiple sectors. A novel detection mechanism, Adaptive Behavioral Signature Extraction (ABSE), is introduced to address these challenges through a dynamic, real-time approach that autonomously learns from file behaviors to identify and mitigate ransomware threats. Unlike static signature-based methods, ABSE adapts to new ransomware variants without requiring manual updates, ensuring higher detection accuracy for both known and zero-day threats. Through continuous monitoring of file activity and automatic extraction of ransomware-specific behavioral signatures, ABSE minimizes false positives and negatives while maintaining efficient resource utilization. The system's scalability across various network sizes and its ability to detect ransomware in real-time provide robust protection in environments where timely intervention is crucial. The experimental results indicate that ABSE consistently outperforms existing detection systems in terms of accuracy, detection speed, and adaptability, making it a highly effective solution for combating evolving ransomware threats.