Merge pull request #1171 from splunk/Tr-408_bug_fix

bug fix detection First Time Seen Running Windows Service

detections/experimental/endpoint/first_time_seen_running_windows_service.yml

@@ -20,7 +20,7 @@ search: '`wineventlog_system` EventCode=7036 |
     rex field=Message "The (?<service>[-\(\)\s\w]+) service entered the (?<state>\w+) state" |
     where state="running" |
     lookup previously_seen_running_windows_services service as service OUTPUT firstTimeSeen |
-    where isnull(firstTimeSeen) OR firstTimeSeen > relative_time(now(), "`previously_seen_windows_service_window`") |
+    where isnull(firstTimeSeen) OR firstTimeSeen > relative_time(now(), `previously_seen_windows_services_window`) |
     table _time dest service | `first_time_seen_running_windows_service_filter`'
 known_false_positives: A previously unseen service is not necessarily malicious. Verify
   that the service is legitimate and that was installed by a legitimate process.

macros/previously_seen_windows_services_window.yml

@@ -1,3 +1,3 @@
 description: Use this macro to determine how far back you should be checking for new Windows services
 definition: '"-70m@m"'
-name: previously_seen_windows_service_window
+name: previously_seen_windows_services_window

tests/endpoint/first_time_seen_running_windows_service.test.yml

@@ -1,18 +0,0 @@
-name: First Time Seen Running Windows Service Unit Test
-tests:
-- name: First Time Seen Running Windows Service
-  file: endpoint/first_time_seen_running_windows_service.yml
-  pass_condition: '| stats count | where count > 0'
-  earliest_time: '-24h'
-  latest_time: 'now'
-  baselines:
-  - name: Previously Seen Running Windows Services - Initial
-    file: baselines/previously_seen_running_windows_services.yml
-    pass_condition: '| stats count | where count > 0'
-    earliest_time: '-24h'
-    latest_time: '-70m@m'
-  attack_data:
-  - file_name: windows-system.log
-    data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/suspicious_behaviour/first_time_windows_service/windows-system.log
-    source: WinEventLog:System
-    sourcetype: WinEventLog