encrypted a .dll payload using RTL and a custom encryption algorithm.  has also obfuscated payloads with base64 XOR and RC4.(Citation: Bitdefender APT28 Dec 2015)(Citation: Unit 42 Sofacy Feb 2018)(Citation: Palo Alto Sofacy 06-2018)(Citation: Talos Seduploader Oct 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: encrypted a .dll payload using RTL and a custom encryption algorithm.  has also obfuscated payloads with base64 XOR and RC4.(Citation: Bitdefender APT28 Dec 2015)(Citation: Unit 42 Sofacy Feb 2018)(Citation: Palo Alto Sofacy 06-2018)(Citation: Talos Seduploader Oct 2017) ### Response: T1027.