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P4T12ICK
39 lines
1.6 KiB
YAML
39 lines
1.6 KiB
YAML
name: Previously Seen Cloud Regions - Update
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id: 512f928a-a461-41b4-8984-db4dd2c472e4
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version: 1
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date: '2020-09-02'
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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 looks for cloud compute events where a compute instance is
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started and creates a baseline of most recent time, `lastTime` and the first time
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`firstTime` we've seen this region in our dataset grouped by the region for the
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last 30 days
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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.vendor_region
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| `drop_dm_object_name("All_Changes")` | inputlookup append=t previously_seen_cloud_regions
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| stats min(firstTimeSeen) as firstTimeSeen max(lastTimeSeen) as lastTimeSeen by
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vendor_region | where lastTimeSeen > relative_time(now(), `previously_seen_cloud_region_forget_window`)
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| eventstats min(firstTimeSeen) as globalFirstTime | eval enough_data = if(globalFirstTime
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<= relative_time(now(), "-14d@d"), 1, 0) | outputlookup previously_seen_cloud_regions
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| stats count'
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how_to_implement: You must be ingesting the approrpiate cloud infrastructure logs
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and have the Security Research cloud data model installed.
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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 In Previously Unused Region
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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.vendor_region
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security_domain: network
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