Hundreds of thousands of computers in more than 150 countries have been hit by the ransomware attack, which has been described as the largest-ever of its kind.
It began Friday and struck banks, hospitals and government agencies among a variety of other targets, exploiting known vulnerabilities in older Microsoft computer operating systems.
"As for the source of these threats, Microsoft's leadership stated this directly, they said the source of the virus was the special services of the United States," Putin said.
It was leaked as part of a document dump, according to researchers.
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"A genie let out of a bottle of this kind, especially created by secret services, can then cause damage to its authors and creators," Putin said on the sidelines of an international summit in Beijing.
"This completely doesn't concern Russia."
The US has accused Russia in the past of mounting several cyberattacks.
In March the Justice Department indicted two officials of Russia's Federal Security Service and two criminal hackers whom they allegedly hired to steal data from some 500 million Yahoo user accounts.
"There is nothing good in this and calls for concern," he said.
"A protection system from these manifestations needs to be worked out.
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