PowerShell Script with Password Policy Discovery Capabilitiesedit
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.powershell*
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
- Tactic: Execution
- Data Source: PowerShell Logs
- Rule Type: BBR
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Setupedit
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
Rule queryedit
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"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Password Policy Discovery
- ID: T1201
- Reference URL: https://attack.mitre.org/techniques/T1201/
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/
-
Sub-technique:
- Name: PowerShell
- ID: T1059.001
- Reference URL: https://attack.mitre.org/techniques/T1059/001/