has delivered malicious Microsoft Office attachments via spearphishing emails.(Citation: iSight Sandworm Oct 2014)(Citation: US-CERT Ukraine Feb 2016)(Citation: ESET Telebots Dec 2016)
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 delivered malicious Microsoft Office attachments via spearphishing emails.(Citation: iSight Sandworm Oct 2014)(Citation: US-CERT Ukraine Feb 2016)(Citation: ESET Telebots Dec 2016) ### Response: T1566.001.