Elastic Security Detection Rules

PowerShell MiniDump Script

Last updated 8 days ago on 2026-01-26
Created 4 years ago on 2021-10-05

About

Detects PowerShell scripts referencing MiniDumpWriteDump or full-memory minidump types, which can capture process memory. Attackers often use this technique to dump credential-bearing processes like LSASS for credential theft.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Credential AccessData Source: PowerShell LogsLanguage: kuery
Severity
high
Risk Score
73
MITRE ATT&CK™

Credential Access (TA0006)(external, opens in a new tab or window)

↳ OS Credential Dumping (T1003)(external, opens in a new tab or window)

Execution (TA0002)(external, opens in a new tab or window)

↳ Command and Scripting Interpreter (T1059)(external, opens in a new tab or window)

False Positive Examples
PowerShell scripts that use this capability for troubleshooting.
License
Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
winlogbeat-*logs-windows.powershell*
Related Integrations

windows(external, opens in a new tab or window)

Query
text code block:
event.category:process and host.os.type:windows and powershell.file.script_block_text:(MiniDumpWriteDump or MiniDumpWithFullMemory or pmuDetirWpmuDiniM) and not user.id : "S-1-5-18"

Install detection rules in Elastic Security

Detect PowerShell MiniDump Script in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).