I get what you mean now. It's an open payment billing system that Mobile Exec (M) Sdn Bhd has with Maybank2u. If you log in to your Maybank2u and click ONLINE BILL PAYMENT > Open Payment, you will see "Mobile Exec (M) Sdn Bhd" in the drop down list.
Mobile Exec (M) Sdn Bhd is a member of Maybank2u.net or Maybank Online Desktop Online Banking Solutions partner. Visit
http://www.maybank2u.net for more details. The fees to join them isn't cheap. Probably more than RM1k per month