SINGAPORE, Sept 26 (Reuters) - Logistics provider Ninja Van added Alibaba Group as a new investor as it raised $578 million in a late stage funding round, the Singapore-based firm said on Sunday. Existing investors to participate in the round included Europe"s GeoPost/DPDgroup, B Capital Group and Monk"s Hill Ventures. The funds will be allocated towards infrastructure and technology systems that "will support a sustainable long-term cost structure," Ninja Van, launched in 2014, said in a statement.