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IMPORTANT: No additional bug fixes or documentation updates will be released for this version.

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Windows Script Executing PowerShell

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Windows Script Executing PowerShell

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Identifies a PowerShell process launched by either cscript.exe or wscript.exe. Observing Windows scripting processes executing a PowerShell script, may be indicative of malicious activity.

Rule type: query

Rule indices:

winlogbeat-*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

Tags:

Elastic
Windows

Version: 2 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.7.0

Rule query

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event.action:"Process Create (rule: ProcessCreate)" and
process.parent.name:(cscript.exe or wscript.exe) and
process.name:powershell.exe

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
Technique:
- Name: Spearphishing Attachment
- ID: T1193
- Reference URL: https://attack.mitre.org/techniques/T1193/

Rule version history

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Version 2 (7.7.0 release)

Updated query, changed from:

event.action:"Process Create (rule: ProcessCreate)" and
process.parent.name:("wscript.exe" or "cscript.exe") and
process.name:"powershell.exe"

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