Rules: First Seen AWS API Call from User
Observes for a user performing a specific API call for the first time. This may be suspicious if a user begins interacting with systems they do not typically.
| Detail | Value |
|---|---|
| Type | First Seen |
| Category | Execution |
| Apply Risk to Entities | user_username |
| Signal Name | First Seen AWS API Call: {{action}} from User |
| Summary Expression | User: {{user_username}} observed executing API Call: {{action}} for service: {{application}} |
| Retention Window | 7776000000 |
| Baseline Window | 2592000000 |
| Baseline Type | PER_ENTITY |
| Score/Severity | Static: 2 |
| Enabled by Default | False |
| Prototype | True |
| Tags | _mitreAttackTactic:TA0002 |
| Origin | Field |
|---|---|
| Normalized Schema | action |
| Direct from Record | fields["userIdentity.type"] |
| Normalized Schema | isEmpty |
| Normalized Schema | metadata_product |
| Normalized Schema | metadata_vendor |
| Normalized Schema | user_username |
| Normalized Schema | user_username_role |