has used the WindowStyle parameter to conceal  windows.(Citation: Palo Alto Sofacy 06-2018) 
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 the WindowStyle parameter to conceal  windows.(Citation: Palo Alto Sofacy 06-2018)  ### Response: T1564.003.