Mo. Rev. Stat. § 521.240
Under an attachment, the officer shall be authorized to seize, as attachable property, the defendant's account books, accounts, notes, bills of exchange, bonds, certificates of deposit, and other evidences of debt, as well as his other property, real, personal and mixed, and any and all judgment debts of the defendant, as well where the judgment or judgments may exist in the court out of which such writ may issue, as where the same may exist in any other court within the jurisdiction of the court out of which such writ may issue; but no property or wages declared by statute to be exempt from execution shall be attached, except in the case of a nonresident defendant, or of a defendant who is about to move out of the state with intent to change his domicile.
§ 521.240, RSMo