security_content/baselines/previously_seen_cloud_instance_modifications_by_user___initial.yml at develop · security-mindset/security_content · GitHub

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name: Previously Seen Cloud Instance Modifications By User - Initial
id: f36dc403-739d-42f3-83a3-49237d8654c5
version: 1
date: '2020-07-29'
author: Rico Valdez, Splunk
type: Baseline
datamodel:
- Change
description: This search builds a table of previously seen users that have modified
  a cloud instance.
search: '| tstats earliest(_time) as firstTimeSeen, latest(_time) as lastTimeSeen
  from datamodel=Change where All_Changes.action=modified All_Changes.change_type=EC2
  c=success by All_Changes.user | `drop_dm_object_name("All_Changes")` | eventstats
  min(firstTimeSeen) as globalFirstTime | eval enough_data = if(globalFirstTime <=
  relative_time(now(), "-7d@d"), 1, 0) | outputlookup previously_seen_cloud_instance_modifications_by_user'
how_to_implement: You must be ingesting the approrpiate cloud infrastructure logs
  and have the latest Change Datamodel accelerated.
known_false_positives: none
references: []
tags:
  analytic_story:
  - Suspicious Cloud Instance Activities
  deployments:
  - 90 Day Baseline
  detections:
  - Cloud Instance Modified By Previously Unseen User
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - _time
  - All_Changes.action
  - All_Changes.change_type
  - All_Changes.status
  - All_Changes.user
  security_domain: network