can use CreateIoCompletionPort() PostQueuedCompletionStatus() and GetQueuedCompletionPort() to rapidly encrypt files excluding those with the extensions of .exe .dll and .lnk. It has used a different AES-256 encryption key per file with a bundled RAS-4096 public encryption key that is unique for each victim.  can use Windows Restart Manager to ensure files are unlocked and open for encryption.(Citation: Cybereason Conti Jan 2021)(Citation: CarbonBlack Conti July 2020)(Citation: Cybleinc Conti January 2020)(Citation: CrowdStrike Wizard Spider October 2020)
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: can use CreateIoCompletionPort() PostQueuedCompletionStatus() and GetQueuedCompletionPort() to rapidly encrypt files excluding those with the extensions of .exe .dll and .lnk. It has used a different AES-256 encryption key per file with a bundled RAS-4096 public encryption key that is unique for each victim.  can use Windows Restart Manager to ensure files are unlocked and open for encryption.(Citation: Cybereason Conti Jan 2021)(Citation: CarbonBlack Conti July 2020)(Citation: Cybleinc Conti January 2020)(Citation: CrowdStrike Wizard Spider October 2020) ### Response: T1486.