Tehran has continued to make light of Western sanctions targeting its banking and oil industries saying attempts to curtail Iran's nuclear program are "futile."
The statement came hours after EU foreign ministers approved a much-ballyhooed raft of sanctions targeting Iran's central bank.
"One of the sanctions announced recently was blocking the Central Bank's assets in the European countries, while the CBI does not have even one single Rial (Iran's currency unit) in Europe," the source said.
The United States imposed additional sanctions against Iran's financial sector in late December, but market analysts note the Obama administration has yet to fully implement them.
The US and EU sanctions are intended to target financial institutions that deal with Central Bank of Iran, Tehran's main clearing house for oil payments.
During the last two years, Iran has been replacing dollar with other currencies in its trade with the outside world.
Critics in the West say Obama's sanctions drive will fail because Iran continues to export oil to major consumers such as China, India, Japan, and Russia, who refuse to cooperate with Western sanctions.
Banking sanctions, they add, will also fail due to Iran's other allies, such as Venezuela, in South America, who have aided Tehran in circumventing Western restrictions.
Russia has long promoted the ruble as an international currency which could be used in bilateral settlements.
In 2010 Moscow began offering to exchange ruble for Chinese Yuan as the two nations look to boost bilateral transactions in their own currencies and reduce their reliance on the dollar.
Tehran and Moscow announced last week that they have started using their own currencies (Rial and Ruble) instead of the US dollar in their bilateral trade exchanges.
However, Israeli Prime Minister Binyamin Netanyahu has described Iran's economy as "wobbling," while US president Barack Obama has said it is in a shambles.
Iran's struggling currency, no longer achored to the dollar and facing high interest rates, dropped 6% in the opening weeks of 2012.