From the WSJ article:
Such orders don’t state that the bank has laundered money, but rather that their internal systems for detecting criminal activity and reporting it to the government are deemed unsound by regulators. The policing of such violations has become more severe since the financial crisis.
Brian Davis, a BB&T spokesman, said the firm has a “long history of quickly addressing regulatory concerns,” and has already made “significant enhancements” to its anti-money laundering compliance program. He said the firm is “committed to working alongside our regulatory partners to implement the needed improvements as quickly as possible.”