The Newcastle defender started for the Leopards in the friendly in Rabat, Morocco, where Bournemouth striker Benik Afobe and Yeni N'Gbakoto of Queens Park Rangers were on target.
Mbemba set up the second goal and also wore the captain's armband in the second half after skipper Gabriel Zakuani was substituted.
Mbemba and his international team-mates have spent the last few days at a training camp in Morocco as they prepare for Saturday's Africa Cup of Nations qualifier against Congo.
Meanwhile, Belgium were 2-1 winners against Czech Republic on Tuesday evening. Matz Sels was named in Roberto Martinez's latest Rode Duivels squad, but was not involved in the friendly match.