primarily uses port 80 for C2 but falls back to ports 443 or 8080 if initial communication fails.
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: primarily uses port 80 for C2 but falls back to ports 443 or 8080 if initial communication fails. ### Response: T1008.