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Merge branch 'AD_Discovery_TR-789_8' of https://github.com/splunk/security_content into AD_Discovery_TR-789_8

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Detection Testing Service
2021-09-10 17:39:06 +00:00
parent b32a091a30 92076d026b
commit 09b79bf310
1 changed files with 11 additions and 8 deletions
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detections/endpoint/getnettcpconnection_with_powershell.yml
+11 -8
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@@ -1,4 +1,4 @@
name: GetNetTcpconnection with PowerShell
name: GetNetTcpconnection with PowerShell
id: e02af35c-1de5-4afe-b4be-f45aba57272b
version: 1
date: '2021-08-25'
@@ -7,13 +7,15 @@ type: Hunting
datamodel:
- Endpoint
description: This analytic looks for the execution of `powershell.exe` with command-line
utilized to get a listing of network connections on a compromised system. The `Get-NetTcpConnection` commandlet lists the current TCP connections.
Red Teams and adversaries alike may use this commandlet for situational awareness and Active Directory Discovery.
utilized to get a listing of network connections on a compromised system. The `Get-NetTcpConnection`
commandlet lists the current TCP connections. Red Teams and adversaries alike may
use this commandlet for situational awareness and Active Directory Discovery.
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
as lastTime from datamodel=Endpoint.Processes where (Processes.process_name="powershell.exe")
(Processes.process=*Get-NetTcpConnection*) by Processes.dest Processes.user Processes.parent_process Processes.process_name
Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `getnettcpconnection_with_powershell_filter`'
as lastTime from datamodel=Endpoint.Processes where (Processes.process_name="powershell.exe")
(Processes.process=*Get-NetTcpConnection*) by Processes.dest Processes.user Processes.parent_process
Processes.process_name Processes.process Processes.process_id Processes.parent_process_id
| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
| `getnettcpconnection_with_powershell_filter`'
how_to_implement: To successfully implement this search you need to be ingesting information
on process that include the name of the process responsible for the changes from
your endpoints into the `Endpoint` datamodel in the `Processes` node.
@@ -49,4 +51,5 @@ tags:
- name: dest
type: Endpoint
role:
- Victim
- Victim
automated_detection_testing: passed