has used icons mimicking MS Office files to mask malicious executables.(Citation: objective-see windtail1 dec 2018)  has also attempted to hide executables by changing the file extension to .scr to mimic Windows screensavers.
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 icons mimicking MS Office files to mask malicious executables.(Citation: objective-see windtail1 dec 2018)  has also attempted to hide executables by changing the file extension to .scr to mimic Windows screensavers. ### Response: T1036.