Another interpretation: "two wickednesses" - that he enslaved Israel, and that he transgressed against the oath. And what was his name? Laban the Aramean was his name.
The Two Wickednesses of Laban the Aramean
Yalkut Shimoni on Nach 41:4
דבר אחר שתי רשעיו ששעבד את ישראל ושעבד על השבועה, ומה שמו לבן הארמי שמו: