This search is to detect a COM CLSID execution through powershell. This technique was seen in several adversaries and malware like ransomware conti where it has a feature to execute command using COM Object. This technique may use by network operator at some cases but a good indicator if some application want to gain privilege escalation or bypass uac.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2021-08-10
- Author: Teoderick Contreras, Splunk
- ID: 65711630-f9bf-11eb-8d72-acde48001122
|T1546.015||Component Object Model Hijacking||Privilege Escalation, Persistence|
|T1546||Event Triggered Execution||Privilege Escalation, Persistence|
`powershell` EventCode=4104 Message = "*CreateInstance([type]::GetTypeFromCLSID*" OR Message = "*CreateInstance([Type]::GetTypeFromProgID*" | stats count min(_time) as firstTime max(_time) as lastTime by EventCode Message ComputerName User | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `powershell_execute_com_object_filter`
Associated Analytic Story
How To Implement
To successfully implement this search, you need to be ingesting logs with the process name, parent process, and command-line executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.
Kill Chain Phase
Known False Positives
network operrator may use this command.
|5.0||10||50||A suspicious powershell script contains COM CLSID command in $Message$ with EventCode $EventCode$ in host $ComputerName$|
source | version: 1