By
At 0740 GMT, the rouble was 0.3 percent weaker against the dollar at 63.09 and lost 0.3 percent to trade at 68.84 versus the euro.
Brent crude oil, one of the key benchmarks for Russian assets, was up 0.12 percent at $50.04 a barrel after falling to $49.65 overnight, its lowest level since September 30.
The dollar-denominated RTS index was 0.1 percent higher at 990.67 points. Its rouble-based peer MICEX gained 0.4 percent to 1982.70 points, supported by the weaker rouble.
Higher volatility in crude prices may send the Micex index towards 1930-1950 in the next five to seven days, Promsvyazbank analysts said in a research note.