We investigate drift kinetic effects on the resistive wall mode (RWM) stability in ITER plasmas, due to the mode resonance with magnetic precession drifts and/or bounce motion of bulk plasma thermal particles. A toroidal drift kinetic model is self-consistently incorporated into the MHD formulation. Self-consistent simulations using the hybrid kinetic-MHD code MARS-K [Y.Q. Liu, and et al. , Phys. Plasmas, in press (2008)] predict a parameter space for ITER steady state plasmas, where the RWM is fully stabilised by the drift kinetic effects combined with the toroidal plasma flow. A wider stable parameter space is predicted by the perturbative approach based on the ideal kink mode or the fluid RWM eigenfunction. The difference is attributed primarily to the self-consistent determination of the mode eigenvalue in the non-perturbative approach.