PowerShell Script with Password Policy Discovery Capabilities

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PowerShell Script with Password Policy Discovery Capabilities

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Identifies the use of Cmdlets and methods related to remote execution activities using WinRM. Attackers can abuse WinRM to perform lateral movement using built-in tools.

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Discovery
  • Data Source: PowerShell Logs
  • Rule Type: BBR

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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event.category: "process" and host.os.type:windows and
(
  powershell.file.script_block_text: (
    "Get-ADDefaultDomainPasswordPolicy" or
    "Get-ADFineGrainedPasswordPolicy" or
    "Get-ADUserResultantPasswordPolicy" or
    "Get-DomainPolicy" or
    "Get-GPPPassword" or
    "Get-PassPol"
  )
  or
  powershell.file.script_block_text: (
    ("defaultNamingContext" or "ActiveDirectory.DirectoryContext" or "ActiveDirectory.DirectorySearcher") and
    (
      (
        ".MinLengthPassword" or
        ".MinPasswordAge" or
        ".MaxPasswordAge"
      ) or
      (
        "minPwdAge" or
        "maxPwdAge" or
        "minPwdLength"
      ) or
      (
        "msDS-PasswordSettings"
      )
    )
  )
) and not powershell.file.script_block_text : (
    "sentinelbreakpoints" and "Set-PSBreakpoint" and "PowerSploitIndicators"
  )
  and not user.id : "S-1-5-18"

Framework: MITRE ATT&CKTM