For  security researchers assessed the threat actors likely used a phishing campaign to distribute a weaponized attachment to victims.
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  security researchers assessed the threat actors likely used a phishing campaign to distribute a weaponized attachment to victims. ### Response: T1566.001.