|ICC prosecutor Fatou Bensouda said perpetrators of brutality would only be emboldened|
Fatou Bensouda said there needed to be "a dramatic shift" in the UN Security Council's approach.
The Hague-based court indicted Sudanese President Omar al-Bashir in 2009 for alleged war crimes. But he remains at large and has refused to recognise the court's authority. Other Sudanese officials have been charged by the ICC, but none has been arrested.
Darfur has been in conflict since 2003 when rebels took up arms.
"It is becoming increasingly difficult for me to appear before you and purport to be updating you when all I am doing is repeating the same things I have said over and over again," Ms Bensouda told the Security Council.
"Given this council's lack of foresight on what should happen in Darfur, I am left with no choice but to hibernate investigative activities in Darfur as I shift resources to other urgent cases."
Analysts say action by the Security Council is unlikely because China - which wields a veto - has traditionally supported Sudan.
|Sudanese displaced women at the Zam Zam refugee camp in 2004|
Hundreds of thousands of people have been displaced by the conflict in Darfur
"What is needed is a dramatic shift in this council's approach to arresting Darfur suspects."
Last month, Sudan asked the UN-African Union force in Darfur (Unamid) to close its human rights office in the capital, Khartoum.
The move came amid tensions over the mission's attempt to investigate claims of mass rape by Sudanese troops in the Darfuri village of Tabit.
Ms Bensouda told the UN that the allegations should "shock this council into action".
However, Sudan has said it carried out its own investigation and had found no proof that anyone was raped. Well, that's it then. I'm sure no-one in the government of Sudan would lie, they're Muslims, even if their president has been indicted for war crimes. I'm sure all those women in Tabit were just having erotic dreams, all at the same time, in the middle of the day, when the Sudanese army happened to be in town.
Nevertheless, some things seem to be improving in parts of Darfur as people have begun to lay down roots.
The conflict in Darfur is being waged on many fronts and by different groups; fighting between government forces, rebels and militias, and localised conflict that has sparked a wave of inter-ethnic violence. This meant there is a steady flow of new arrivals - on foot, donkey and hired vehicle. According to the UN, 390,000 people fled their homes in the first half of 2014 - more than in any single year since the height of the crisis in 2004.