C2 traffic attempts to evade detection by resembling data generated by legitimate messenger applications such as MSN and Yahoo! messengers. Additionally some variants of  use modified SSL code for communications back to C2 servers making SSL decryption ineffective.
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: C2 traffic attempts to evade detection by resembling data generated by legitimate messenger applications such as MSN and Yahoo! messengers. Additionally some variants of  use modified SSL code for communications back to C2 servers making SSL decryption ineffective. ### Response: T1001.003.