Samsam Test File Write
The search looks for a file named "test.txt" written to the windows system directory tree, which is consistent with Samsam propagation.
Samsam Test File Write Help
You must be ingesting data that records the file-system activity from your hosts to populate the Endpoint file-system data-model node. If you are using Sysmon, you will need a Splunk Universal Forwarder on each endpoint from which you want to collect data.
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