has sent spearphishing emails with various attachment types to corporate and personal email accounts of victim organizations. Attachment types have included .rtf .doc .xls archives containing LNK files and password protected archives containing .exe and .scr executables.(Citation: Talos Cobalt Group July 2018)(Citation: PTSecurity Cobalt Group Aug 2017)(Citation: PTSecurity Cobalt Dec 2016)(Citation: Group IB Cobalt Aug 2017)(Citation: Proofpoint Cobalt June 2017)(Citation: RiskIQ Cobalt Nov 2017)(Citation: Unit 42 Cobalt Gang Oct 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 sent spearphishing emails with various attachment types to corporate and personal email accounts of victim organizations. Attachment types have included .rtf .doc .xls archives containing LNK files and password protected archives containing .exe and .scr executables.(Citation: Talos Cobalt Group July 2018)(Citation: PTSecurity Cobalt Group Aug 2017)(Citation: PTSecurity Cobalt Dec 2016)(Citation: Group IB Cobalt Aug 2017)(Citation: Proofpoint Cobalt June 2017)(Citation: RiskIQ Cobalt Nov 2017)(Citation: Unit 42 Cobalt Gang Oct 2018) ### Response: T1566.001.