[Duqu](https://attack.mitre.org/software/S0038) was an early example of malware that used steganography.
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: [Duqu](https://attack.mitre.org/software/S0038) was an early example of malware that used steganography. ### Response: T1027.003.