AWS Cross Account Activity From Previously Unseen Account

Description

This search looks for AssumeRole events where an IAM role in a different account is requested for the first time.

Content Mapping

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Use Case

Advanced Threat Detection

Category

Cloud Security, SaaS

Alert Volume

This search looks for AssumeRole events where an IAM role in a different account is requested for the first time.

SPL Difficulty

None

Journey

Stage 3

Kill Chain Phases

Actions On Objectives

Data Sources

AWS
Audit Trail

   Help

AWS Cross Account Activity From Previously Unseen Account Help

You must be ingesting your cloud infrastructure logs from your cloud provider. You should run the baseline search Previously Seen AWS Cross Account Activity - Initial to build the initial table of source IP address, geographic locations, and times. You must also enable the second baseline search Previously Seen AWS Cross Account Activity - Update to keep this table up to date and to age out old data. You can also provide additional filtering for this search by customizing the aws_cross_account_activity_from_previously_unseen_account_filter macro.

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