discovery_posh_password_policy.toml

[metadata]
creation_date = "2023/07/12"
integration = ["windows"]
maturity = "production"
updated_date = "2024/05/21"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
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.
"""
from = "now-119m"
index = ["winlogbeat-*", "logs-windows.powershell*"]
interval = "60m"
language = "kuery"
license = "Elastic License v2"
name = "PowerShell Script with Password Policy Discovery Capabilities"
risk_score = 21
rule_id = "fe25d5bc-01fa-494a-95ff-535c29cc4c96"
setup = """## Setup

The 'PowerShell Script Block Logging' logging policy must be enabled.
Steps to implement the logging policy with Advanced Audit Configuration:

```
Computer Configuration >
Administrative Templates >
Windows PowerShell >
Turn on PowerShell Script Block Logging (Enable)
```

Steps to implement the logging policy via registry:

```
reg add "hklm\\SOFTWARE\\Policies\\Microsoft\\Windows\\PowerShell\\ScriptBlockLogging" /v EnableScriptBlockLogging /t REG_DWORD /d 1
```
"""
severity = "low"
tags = [
    "Domain: Endpoint",
    "OS: Windows",
    "Use Case: Threat Detection",
    "Tactic: Discovery",
    "Tactic: Execution",
    "Data Source: PowerShell Logs",
    "Rule Type: BBR",
]
timestamp_override = "event.ingested"
type = "query"

query = '''
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 
  (
    powershell.file.script_block_text : ("43c15630-959c-49e4-a977-758c5cc93408" and "CmdletsToExport" and "ActiveDirectory.Types.ps1xml")
  )
  and not user.id : "S-1-5-18"
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1201"
name = "Password Policy Discovery"
reference = "https://attack.mitre.org/techniques/T1201/"


[rule.threat.tactic]
id = "TA0007"
name = "Discovery"
reference = "https://attack.mitre.org/tactics/TA0007/"
[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[rule.threat.technique.subtechnique]]
id = "T1059.001"
name = "PowerShell"
reference = "https://attack.mitre.org/techniques/T1059/001/"



[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"