Detection rules › Sigma
Password Policy Discovery With Get-AdDefaultDomainPasswordPolicy
Detetcts PowerShell activity in which Get-Addefaultdomainpasswordpolicy is used to get the default password policy for an Active Directory domain.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1201 Password Policy Discovery |
Event coverage
| Provider | Event | Title |
|---|---|---|
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
Rule body yaml
title: Password Policy Discovery With Get-AdDefaultDomainPasswordPolicy
id: bbb9495b-58fc-4016-b9df-9a3a1b67ca82
status: test
description: Detetcts PowerShell activity in which Get-Addefaultdomainpasswordpolicy is used to get the default password policy for an Active Directory domain.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1201/T1201.md#atomic-test-9---enumerate-active-directory-password-policy-with-get-addefaultdomainpasswordpolicy
- https://learn.microsoft.com/en-us/powershell/module/activedirectory/get-addefaultdomainpasswordpolicy?view=windowsserver2022-ps
author: frack113
date: 2022-03-17
tags:
- attack.discovery
- attack.t1201
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
ScriptBlockText|contains: Get-AdDefaultDomainPasswordPolicy
condition: selection
falsepositives:
- Legitimate PowerShell scripts
level: low
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ScriptBlockText|contains: Get-AdDefaultDomainPasswordPolicy
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 |
|