When the  command and control is operating over HTTP or HTTPS Duqu uploads data to its controller by appending it to a blank JPG file.
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: When the  command and control is operating over HTTP or HTTPS Duqu uploads data to its controller by appending it to a blank JPG file. ### Response: T1001.002.