T1059.004 Unix Shell Mappings

Adversaries may abuse Unix shell commands and scripts for execution. Unix shells are the primary command prompt on Linux and macOS systems, though many variations of the Unix shell exist (e.g. sh, bash, zsh, etc.) depending on the specific OS or distribution.(Citation: DieNet Bash)(Citation: Apple ZShell) Unix shells can control every aspect of a system, with certain commands requiring elevated privileges.

Unix shells also support scripts that enable sequential execution of commands as well as other typical programming operations such as conditionals and loops. Common uses of shell scripts include long or repetitive tasks, or the need to run the same set of commands on multiple systems.

Adversaries may abuse Unix shells to execute various commands or payloads. Interactive shells may be accessed through command and control channels or during lateral movement such as with SSH. Adversaries may also leverage shell scripts to deliver and execute multiple commands on victims or as part of payloads used for persistence.



Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name
CM-7 Least Functionality Protects T1059.004 Unix Shell
SI-10 Information Input Validation Protects T1059.004 Unix Shell
SI-7 Software, Firmware, and Information Integrity Protects T1059.004 Unix Shell
linux_auditd_alerts_and_log_analytics_agent_integration Linux auditd alerts and Log Analytics agent integration technique_scores T1059.004 Unix Shell
azure_sentinel Azure Sentinel technique_scores T1059.004 Unix Shell
azure_defender_for_app_service Azure Defender for App Service technique_scores T1059.004 Unix Shell