has used fragmented strings environment variables standard input (stdin) and native character-replacement functionalities to obfuscate commands.(Citation: FireEye Obfuscation June 2017)(Citation: FireEye FIN7 Aug 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: has used fragmented strings environment variables standard input (stdin) and native character-replacement functionalities to obfuscate commands.(Citation: FireEye Obfuscation June 2017)(Citation: FireEye FIN7 Aug 2018) ### Response: T1027.