A spokeswoman told AFP that minister Sergei Lavrov "is planning" to take part in the meeting of the International Syria Support Group (ISSG) -- which includes 17 key nations -- in the Austrian capital next week.
Moscow -- a key backer of President Bashar al-Assad -- is currently spearheading a diplomatic push to resolve the conflict as co-chair of ISSG alongside the United States.
Washington and Moscow yesterday vowed in a joint statement to "redouble" efforts to end the five-year war in Syria, as regime forces and rebels in the Syrian battleground city of Aleppo agreed to extend a truce for a second time.
Russia pledged in the yesterday statement that it "will work with the Syrian authorities to minimise aviation operations over areas that are predominantly inhabited by civilians or parties" to the ceasefire.
Washington meanwhile said it was "committed to intensifying its support and assistance to regional allies to help them prevent the flow of fighters, weapons or financial support to terrorist organisations across their borders".