has used spearphishing with an attachment to deliver files with exploits to initial victims.(Citation: Cymmetria Patchwork)(Citation: Securelist Dropping Elephant)(Citation: TrendMicro Patchwork Dec 2017)
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 spearphishing with an attachment to deliver files with exploits to initial victims.(Citation: Cymmetria Patchwork)(Citation: Securelist Dropping Elephant)(Citation: TrendMicro Patchwork Dec 2017) ### Response: T1566.001.