This detection is to identify the common service name created by the CLOP ransomware as part of its persistence and high privilege code execution in the infected machine. Ussually CLOP ransomware use StartServiceCtrlDispatcherW API in creating this service entry.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2021-03-17
- Author: Teoderick Contreras
- ID: 07e08a12-870c-11eb-b5f9-acde48001122
|T1543||Create or Modify System Process||Persistence, Privilege Escalation|
Kill Chain Phase
1 2 3 4 5 `wineventlog_system` EventCode=7045 Service_Name IN ("SecurityCenterIBM", "WinCheckDRVs") | stats count min(_time) as firstTime max(_time) as lastTime by EventCode Service_File_Name Service_Name Service_Start_Type Service_Type | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `clop_ransomware_known_service_name_filter`
The SPL above uses the following Macros:
Note that clop_ransomware_known_service_name_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
How To Implement
To successfully implement this search, you need to be ingesting logs with the Service name, Service File Name Service Start type, and Service Type from your endpoints.
Known False Positives
Associated Analytic story
|100.0||100||100||An instance of $parent_process_name$ spawning $process_name$ was identified on endpoint $dest$ executing known Clop Ransomware service names.|
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