Name:Get ADDefaultDomainPasswordPolicy with Powershell Script Block id:1ff7ccc8-065a-11ec-91e4-acde48001122 version:4 date:2024-10-17 author:Teoderick Contreras, Mauricio Velazco, Splunk status:production type:Hunting Description:The following analytic detects the execution of the `Get-ADDefaultDomainPasswordPolicy` PowerShell cmdlet, which is used to retrieve the password policy in a Windows domain. This detection leverages PowerShell Script Block Logging (EventCode=4104) to identify the specific command execution. Monitoring this activity is significant as it can indicate an attempt to gather domain policy information, which is often a precursor to further malicious actions. If confirmed malicious, this activity could allow an attacker to understand password policies, aiding in password attacks or further domain enumeration. Data_source:
-Powershell Script Block Logging 4104
search:`powershell` EventCode=4104 ScriptBlockText ="*Get-ADDefaultDomainPasswordPolicy*" | stats count min(_time) as firstTime max(_time) as lastTime by EventCode ScriptBlockText Computer UserID | rename Computer as dest, UserID as user | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `get_addefaultdomainpasswordpolicy_with_powershell_script_block_filter`
how_to_implement:The following Hunting analytic requires PowerShell operational logs to be imported. Modify the powershell macro as needed to match the sourcetype or add index. This analytic is specific to 4104, or PowerShell Script Block Logging. known_false_positives:Administrators or power users may use this command for troubleshooting. References: -https://github.com/S1ckB0y1337/Active-Directory-Exploitation-Cheat-Sheet -https://attack.mitre.org/techniques/T1201/ -https://docs.microsoft.com/en-us/powershell/module/activedirectory/get-addefaultdomainpasswordpolicy?view=windowsserver2019-ps drilldown_searches:
: tags: analytic_story: - 'Active Directory Discovery' asset_type:Endpoint confidence:30 impact:30 message:Powershell process having commandline "Get-ADDefaultDomainPasswordPolicy" to query domain password policy on $dest$ mitre_attack_id: - 'T1201' observable: name:'dest' type:'Hostname' - role: - 'Victim' name:'user' type:'User' - role: - 'Victim' product: - 'Splunk Enterprise' - 'Splunk Enterprise Security' - 'Splunk Cloud' required_fields: - '_time' - 'EventCode' - 'Message' - 'ComputerName' - 'User' risk_score:9 security_domain:endpoint
