Determination of seismic events locations (such as volcanic and geothermal activities, hydraulic fractures and faults activities) and investigating their distribution provides useful information about the active tectonic structures. It is also a key problem in study of unconventional reservoir and improving the safety of miners. Locating passive seismic sources by conventional methods encounters with number of challenges such as arrival picking, lack of source origin time and location, polarity variation along the recorded waveform and low S/N ratio. Recently developed continuous monitoring of microseismic events at the earth surface, which is based on migration methods, does not require arrival picking on individual geophone. The method is capable of detecting events with much lower S/N on individual receiver. The method proposed in this paper is based on the idea of "diffraction stack" is best suited for large networks of surface and/or downhole receivers and it can overcome all of above mentioned challenges. We evaluated its performance by applying on synthetic and semi-real data. Results indicate the high performance of the method.