Hedge fund billionaire George Soros's charitable foundation may be kicked out of Russia, as Moscow considers banning foreign non-governmental organizations (NGO) that promote democracy.

TASS, Russia's state-owned media service, reported on Wednesday that the Federation Council would consider a "stop list" of NGOs accused of carrying out "soft aggression" in the country.

Twelve organizations are on the "patriotic 'stop list,'" including Soros' grant-making foundation. It aims to promote "vibrant and tolerant democracies whose governments are accountable to their citizens," according to the Open Society Foundations website, which was founded by Soros.

CNBC believes this is the "Soros Foundation" to which TASS refers. However, Open Society Foundations was not immediately available to comment.