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We have not been able to test, simulate or build datasets for it, use at your own risk!
This search looks for RDP application network traffic and filters any source/destination pair generating more than twice the standard deviation of the average traffic.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Network_Traffic
- Last Updated: 2020-07-21
- Author: Jose Hernandez, Splunk
- ID: a98727cc-286b-4ff2-b898-41df64695923
|T1021.001||Remote Desktop Protocol||Lateral Movement|
| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Network_Traffic where All_Traffic.app=rdp by All_Traffic.src All_Traffic.dest All_Traffic.dest_port | eventstats stdev(count) AS stdev avg(count) AS avg p50(count) AS p50 | where count>(avg + stdev*2) | rename All_Traffic.src AS src All_Traffic.dest AS dest | table firstTime lastTime src dest count avg p50 stdev | `remote_desktop_network_bruteforce_filter`
Associated Analytic Story
How To Implement
You must ensure that your network traffic data is populating the Network_Traffic data model.
Kill Chain Phase
Known False Positives
RDP gateways may have unusually high amounts of traffic from all other hosts' RDP applications in the network.
source | version: 2