A malicious code analysis method and system, a data processing apparatus, and an electronic apparatus are provided. A behavior characteristic data corresponding to a suspicious file is received from the electronic apparatus via the data processing apparatus to analyze the behavior characteristic data. The behavior characteristic data corresponding to the suspicious file is compared with a malware characteristic data of each of a plurality of malicious codes to obtain a comparison result. And based on the comparison result, a representative attack code corresponding to the suspicious file is obtained and a precaution corresponding to the representative attack code is transmitted to the electronic apparatus.