Will the ICC indict and prosecute for the 298 who were murdered on Flight 17?

Have you noticed how, in general, people get prosecuted more often if they murder one than if they murder hundreds?  That isn’t right, is it? Every day across the USA people are prosecuted in court for murder (as they should be) but then you get mass murderers (eg Sudan’s President Bashir) who never get prosecuted. Bashir is under indictment for genocide in the ICC but no one will arrest him and bring him to justice.  Will the murderers of 298 people on flight 17 likewise escape justice?