uses a custom DNS tunneling protocol for C2.(Citation: Unit 42 DarkHydrus July 2018)
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: uses a custom DNS tunneling protocol for C2.(Citation: Unit 42 DarkHydrus July 2018) ### Response: T1094.