previously_seen_cloud_api_calls_per_user_role___update.yml

name: Previously Seen Cloud API Calls Per User Role - Update
id: c4b760a0-6a97-47e9-b089-8ae9e57f210e
version: 1
date: '2020-09-03'
author: David Dorsey, Splunk
type: Baseline
datamodel:
- Change
description: This search updates the table of the first and last times seen for every
  user role and command combination.
search: '| tstats earliest(_time) as firstTimeSeen, latest(_time) as lastTimeSeen
  from datamodel=Change where All_Changes.user_type=AssumedRole AND All_Changes.status=success
  by All_Changes.user, All_Changes.command | `drop_dm_object_name("All_Changes")`
  | table user, command, firstTimeSeen, lastTimeSeen | inputlookup previously_seen_cloud_api_calls_per_user_role
  append=t | stats min(firstTimeSeen) as firstTimeSeen, max(lastTimeSeen) as lastTimeSeen
  by user, command | where lastTimeSeen > relative_time(now(), `previously_seen_cloud_api_calls_per_user_role_forget_window`)
  | eventstats min(firstTimeSeen) as globalFirstTime | eval enough_data = if(globalFirstTime
  <= relative_time(now(), "-7d@d"), 1, 0) | table user, command, firstTimeSeen, lastTimeSeen,
  enough_data | outputlookup previously_seen_cloud_api_calls_per_user_role'
how_to_implement: You must be ingesting Cloud infrastructure logs from your cloud
  provider.
known_false_positives: none
references: []
tags:
  analytic_story:
  - Suspicious Cloud User Activities
  detections:
  - Cloud API Calls From Previously Unseen User Roles
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  required_fields:
  - _time
  - All_Changes.user_type
  - All_Changes.status
  - All_Changes.user
  - All_Changes.command
  security_domain: network