has used port-protocol mismatches on ports such as 53 80 443 and 8080 during C2.
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 used port-protocol mismatches on ports such as 53 80 443 and 8080 during C2. ### Response: T1571.