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P4T12ICK
40 lines
1.4 KiB
YAML
40 lines
1.4 KiB
YAML
name: Previously Seen Cloud Compute Images - Initial
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id: 7744597f-d07a-4cea-94a7-e0f8aaebc410
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version: 1
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date: '2020-10-08'
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author: David Dorsey, Splunk
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type: Baseline
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datamodel:
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- Change
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description: This search builds a table of previously seen images used to launch cloud
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compute instances
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search: '| tstats earliest(_time) as firstTimeSeen, latest(_time) as lastTimeSeen
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from datamodel=Change where All_Changes.action=created by All_Changes.Instance_Changes.image_id
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| `drop_dm_object_name("All_Changes")` | `drop_dm_object_name("Instance_Changes")`
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| where image_id != "unknown" | eventstats min(firstTimeSeen) as globalFirstTime
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| eval enough_data = if(globalFirstTime <= relative_time(now(), "-7d@d"), 1, 0)
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| outputlookup previously_seen_cloud_compute_images'
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how_to_implement: You must be ingesting the approrpiate cloud infrastructure logs
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and have the latest Change Datamodel accelerated
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known_false_positives: none
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references: []
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tags:
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analytic_story:
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- Cloud Cryptomining
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detections:
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- Cloud Compute Instance Created With Previously Unseen Image
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- All_Changes.action
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- All_Changes.Instance_Changes.image_id
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security_domain: network
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deployment:
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scheduling:
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cron_schedule: 0 2 * * 0
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earliest_time: -90d@d
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latest_time: -1d@d
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schedule_window: auto |