used custom tools to create SOCK5 and custom protocol proxies between infected hosts.(Citation: FireEye APT39 Jan 2019)
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: used custom tools to create SOCK5 and custom protocol proxies between infected hosts.(Citation: FireEye APT39 Jan 2019) ### Response: T1090.001.