A  custom backdoor implant included a custom PE loader named Security Package that was added into the lsass.exe process via registry key. 
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: A  custom backdoor implant included a custom PE loader named Security Package that was added into the lsass.exe process via registry key.  ### Response: T1036.004.