The C2 server response to a beacon sent by a variant of  contains a 36-character GUID value that is used as an encryption key for subsequent network communications. Some variants of  use various XOR operations to encrypt C2 data.
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: The C2 server response to a beacon sent by a variant of  contains a 36-character GUID value that is used as an encryption key for subsequent network communications. Some variants of  use various XOR operations to encrypt C2 data. ### Response: T1573.001.