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Detect Use of cmd exe to Launch Script Interpreters

The following detects the execution of cscript.exe or wscript.exe processes spawned by cmd.exe, leveraging Endpoint Detection and Response (EDR) telemetry mapped to the Endpoint data model, with additional contextual…

Description

The following detects the execution of cscript.exe or wscript.exe processes spawned by cmd.exe, leveraging Endpoint Detection and Response (EDR) telemetry mapped to the Endpoint data model, with additional contextual filtering to improve fidelity and reduce false positives. It focuses on executions originating from user-writable directories such as Users, AppData, Temp, and Downloads, which are commonly abused by attackers to stage and execute malicious scripts, while excluding trusted system paths like C:\Windows\System32\ and C:\Program Files\ that are typically associated with legitimate activity. The detection also filters out service accounts (e.g., accounts ending with $ or known naming conventions) to minimize noise from automated processes and incorporates command-line context to better assess script execution patterns and identify potentially suspicious behavior.

Detection logic

Detection requirements

Platform
Windows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Known benign triggers

  • This detection may still generate alerts from legitimate administrative or enterprise activity, particularly in environments that rely on logon scripts, software deployment tools (e.g., SCCM, Intune), legacy applications, or IT automation frameworks that execute scripts via cmd.exe. Some organizations may also have internally developed scripts that run from user-writable directories, which can appear suspicious but are benign. Additionally, environments with non-standard application installations or portable tools may trigger this detection.

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