Karim Khan, who is British, was named on Friday in an annex - not yet made public - to an executive order signed by Trump a day earlier, a senior ICC official and another source claimed.
On Thursday, US President Donald Trump signed an executive order imposing sanctions on the court.
Donald Trump said the ICC abused its power by issuing "baseless arrest warrants" targeting Netanyahu and former Defense Minister Yoav Gallant.
A major topic of discussion was legislative action against the International Criminal Court, with Senate leaders pledging to advance a bill aimed at countering the court.
The order will place financial and visa sanctions on individuals and their family members who assist in ICC investigations of US citizens or US allies said the official. The ICC did not comment.
The last significant update published by IDF on war crimes probes was in August after IDF Military Advocate General Maj. Gen. Yifat Tomer Yerushalmi first started to provide public updates in May.
The chamber voted 54-45, meaning the measure, which had already passed the Republican-majority House of Representatives could not get the 60 yes votes needed.
The Taliban claimed the ICC should “not attempt to impose a particular interpretation of human rights on the entire world and ignore the religious and national values of people..."
The Afghanistan probe is one of the longest by ICC prosecutors and has been beset by legal and practical delays.
Sticking to his short-term strategy, Netanyahu keeps all options open, knowing that in the Middle East, anything can derail even the best-laid plans. As the stages unfold, new opportunities develop,