has inserted malicious macros into existing documents providing persistence when they are reopened.  has loaded the group's previously delivered VBA project by relaunching Microsoft Outlook with the /altvba option once the Application.Startup event is received.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: has inserted malicious macros into existing documents providing persistence when they are reopened.  has loaded the group's previously delivered VBA project by relaunching Microsoft Outlook with the /altvba option once the Application.Startup event is received. ### Response: T1137.