Kammala jumla mai zuwa: A cikin 2014, al-Hashimi a hukumance ya bar al-Qaeda, yana sake tabbatar da amincinsa ga ISIL (wanda a baya ya yi aiki a matsayin reshen Iraqi na al-Qaeda). Ya taka muhimmiyar rawa a
ISIL ta kama Mosul a watan Yunin 2014. Ya kasance daya daga cikin manyan shugabannin ISIL wadanda suka shirya kisan kare dangi na Yazidis a lokacin kisan gillar Sinjar a watan Agusta na wannan shekarar. A wannan lokacin, ya zama mataimakin Abu Bakr al-Baghdadi.