Detection rules › Sigma
Create Volume Shadow Copy with Powershell
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | T1003.003 OS Credential Dumping: NTDS |
Event coverage
| Provider | Event | Title |
|---|---|---|
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
Rule body yaml
title: Create Volume Shadow Copy with Powershell
id: afd12fed-b0ec-45c9-a13d-aa86625dac81
status: test
description: Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information
references:
- https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7
author: frack113
date: 2022-01-12
tags:
- attack.credential-access
- attack.t1003.003
- attack.ds0005
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
ScriptBlockText|contains|all:
- Win32_ShadowCopy
- ').Create('
- ClientAccessible
condition: selection
falsepositives:
- Legitimate PowerShell scripts
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ScriptBlockText|contains|all:
- Win32_ShadowCopy
- ').Create('
- ClientAccessible
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
ScriptBlockText | match |
|