executed file /bin/pwd in activity exploiting CVE-2019-19781 against Citrix devices.
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: executed file /bin/pwd in activity exploiting CVE-2019-19781 against Citrix devices. ### Response: T1059.004.