Mont. Code Ann. § 7-21-2116

The county shall bring suit in the name of the state of Montana as plaintiff for the recovery of the license tax or fee authorized by this part against any person required to take out a license who fails, neglects, or refuses to take out the license or who carries on or attempts to carry on business without the license. Either the county treasurer or the county attorney shall make the necessary affidavit for the writ of attachment, and the writ of attachment may be issued without any bonds being given on behalf of the plaintiff.