Maryland Code, Courts and Judicial Proceedings § 3-301

(a) A court of equity or a court of law, including the District Court, may issue an attachment on a judgment or decree in lieu of any other execution.

(b) A plaintiff may attach a debt due the defendant on a judgment or decree of a court of law or equity, including the District Court.

(c) If the property attached consists of a debt due the defendant on a judgment, the attachment does not prevent the issuance of execution of the judgment, provided the writ of execution shall direct the proceeds of the execution to be brought into court, subject to further order of the court to abide the result in the attachment.