In this paper, we propose techniques to detect and classify internet worm by using data mining approaches without feature extraction [4]. We consider source ports and destination ports as well as some protocols that worm attempts to propagate [2]. Source and destination ports and protocols of normal and worm behavior are trained on data mining models. Moreover, known worm and unknown worm are classified by these models with high detection rate and low false alarm rate. Our detection approach focuses on detection at the network end point with detection rate over 99% and false alarm rate around 1% on known worm and over 94% detection rate with false alarm rate close to 0% on unknown worm without feature extraction and K-L divergence.