"These are baseless allegations substantiated with nothing, done on a rather amateurish, emotional level that is hardly worthy of professional work of truly world-class security services," Kremlin spokesman Dmitry Peskov told journalists.
US intelligence agencies Friday released a report claiming that Russian President Vladimir Putin personally ordered a campaign of hacking and media manipulation to upend the campaign of Democratic presidential candidate Hillary Clinton.
The Kremlin's comments were the first official reaction by Moscow to the public report, which was half the length of the classified version presented to President Barack Obama and President-elect Donald Trump.
"We still don't know what data is really being used by those who present such unfounded accusations," Peskov said, insisting the Kremlin was "categorically denying any implication" it was responsible for the alleged hacking.
"We are growing rather tired of these accusations. It is becoming a full-on witch hunt," Peskov said, echoing Trump's claim ahead of Friday's briefing by spy chiefs that the hacking revelations were a "political witch hunt" aimed at discrediting him.
Peskov added that "witch hunts" by US politicians are usually followed by "more sober specialists, more sober approaches which seek dialogue rather than emotional fits."