Upon first execution of TONEDEAF, FireEye identified a callback to the C2 server offlineearthquake[.]com over port 80.
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: Upon first execution of TONEDEAF, FireEye identified a callback to the C2 server offlineearthquake[.]com over port 80. ### Response: T1571.