A malware detection method and system using a memory map. A malware detection method may include collecting, by processing circuitry, a plurality of memory maps from a plurality of client devices, a client program being installed in each of the plurality of client devices, analyzing, by the processing circuitry, a plurality of memory addresses of the plurality of memory maps to obtain an analysis result, and determining, by the processing circuitry, whether malware is present in one of the plurality of client devices based on the analysis result.