Name:Get DomainPolicy with Powershell Script Block id:a360d2b2-065a-11ec-b0bf-acde48001122 version:4 date:2024-09-30 author:Teoderick Contreras, Splunk status:production type:TTP Description:The following analytic detects the execution of the `Get-DomainPolicy` cmdlet using PowerShell Script Block Logging (EventCode=4104). It leverages logs capturing script block text to identify attempts to obtain the password policy in a Windows domain. This activity is significant as it indicates potential reconnaissance efforts by adversaries or Red Teams to gather domain policy information, which is crucial for planning further attacks. If confirmed malicious, this behavior could lead to detailed knowledge of domain security settings, aiding in privilege escalation or lateral movement within the network. Data_source:
-Powershell Script Block Logging 4104
search:`powershell` EventCode=4104 ScriptBlockText ="*Get-DomainPolicy*" | stats count min(_time) as firstTime max(_time) as lastTime by Opcode Computer UserID EventCode ScriptBlockText | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `get_domainpolicy_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://powersploit.readthedocs.io/en/latest/Recon/Get-DomainPolicy/ -https://attack.mitre.org/techniques/T1201/ drilldown_searches: name:'View the detection results for - "$Computer$" and "$UserID$"' search:'%original_detection_search% | search Computer = "$Computer$" UserID = "$UserID$"' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' name:'View risk events for the last 7 days for - "$Computer$" and "$UserID$"' search:'| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$Computer$", "$UserID$") starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`' earliest_offset:'$info_min_time$' latest_offset:'$info_max_time$' tags: analytic_story: - 'Active Directory Discovery' asset_type:Endpoint confidence:60 impact:50 message:powershell process having commandline $ScriptBlockText$ to query domain policy. mitre_attack_id: - 'T1201' observable: name:'Computer' type:'Hostname' - role: - 'Victim' name:'UserID' type:'User' - role: - 'Victim' product: - 'Splunk Enterprise' - 'Splunk Enterprise Security' - 'Splunk Cloud' required_fields: - '_time' - 'ScriptBlockText' - 'Opcode' - 'Computer' - 'UserID' - 'EventCode' risk_score:30 security_domain:endpoint
