LoFP / this is meant to be a low risk rba anomaly analytic or to be used for hunting. enable this with a low risk score and let it generate risk in the risk index.

Techniques

• T1059.001

Sample rules

Windows PowerShell Get CIMInstance Remote Computer

• source: splunk
• technicques:
  • T1059.001

Description

The following analytic detects the use of the Get-CimInstance cmdlet with the -ComputerName parameter, indicating an attempt to retrieve information from a remote computer. It leverages PowerShell Script Block Logging to identify this specific command execution. This activity is significant as it may indicate unauthorized remote access or information gathering by an attacker. If confirmed malicious, this could allow the attacker to collect sensitive data from remote systems, potentially leading to further exploitation or lateral movement within the network.

Detection logic

`powershell` EventCode=4104 ScriptBlockText="*get-ciminstance*" AND ScriptBlockText="*computername*"  
| stats count min(_time) as firstTime max(_time) as lastTime by EventCode ScriptBlockText Computer user_id 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `windows_powershell_get_ciminstance_remote_computer_filter`