The following analytic utilizes PowerShell Script Block Logging (EventCode=4104) to identify the execution of the
GetDomainComputer is part of PowerView, a PowerShell tool used to perform enumeration on Windows domains. Red Teams and adversaries alike may use PowerView to enumerate domain computers for situational awareness and Active Directory Discovery.
- Type: TTP
Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Last Updated: 2022-05-02
- Author: Mauricio Velazco, Splunk
- ID: f64da023-b988-4775-8d57-38e512beb56e
Kill Chain Phase
- CIS 10
1 2 3 4 `powershell` EventCode=4104 (ScriptBlockText = "*Get-DomainComputer*") | stats count min(_time) as firstTime max(_time) as lastTime by Opcode Computer UserID EventCode ScriptBlockText | `security_content_ctime(firstTime)` | `getdomaincomputer_with_powershell_script_block_filter`
The SPL above uses the following Macros:
getdomaincomputer_with_powershell_script_block_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
List of fields required to use this analytic.
How To Implement
To successfully implement this analytic, you will need to enable PowerShell Script Block Logging on some or all endpoints. Additional setup here https://docs.splunk.com/Documentation/UBA/220.127.116.11/GetDataIn/AddPowerShell#Configure_module_logging_for_PowerShell.
Known False Positives
Administrators or power users may use PowerView for troubleshooting.
Associated Analytic Story
|24.0||30||80||Remote system discovery with PowerView on $Computer$ by $user$|
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
source | version: 2