For  UNC3890 actors established domains that appeared to be legitimate services and entities such as LinkedIn Facebook Office 365 and Pfizer.
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: For  UNC3890 actors established domains that appeared to be legitimate services and entities such as LinkedIn Facebook Office 365 and Pfizer. ### Response: T1583.001.