smbclientsmbclient

smbclient is a Unix living-off-the-land binary catalogued by the GTFOBins. Documented abuse functions: download, shell, upload. Mapped ATT&CK techniques (per LOLBAS / GTFOBins → MITRE crosswalk): T1059, T1105, T1567. Defenders should monitor execution of smbclient under non-administrative or sudo contexts and alert when its arguments match the abuse-function signatures.