During  the threat actors used uncommon high ports for its backdoor C2 including ports 25667 and 470000.
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: During  the threat actors used uncommon high ports for its backdoor C2 including ports 25667 and 470000. ### Response: T1571.