has connected to a signalization server that provides a URL and port and then  sends a GET request to that URL to establish 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 connected to a signalization server that provides a URL and port and then  sends a GET request to that URL to establish C2. ### Response: T1568.