Rules: Okta - First Seen Client ID/ASN combo in successful OIDC token grant
This signal looks for a new Client ID value ( mapped to the user_username field ) and ASN combination being issued an OIDC token, excluding the Okta Browser Plugin and Okta Dashboard. Use the Okta admin portal and look at the "Applications" section to cross-reference the Client ID value - ensure that the IP address that is requesting the token is known and that this operation is expected and authorized.
| Detail | Value |
|---|---|
| Type | First Seen |
| Category | Defense Evasion |
| Apply Risk to Entities | user_username |
| Signal Name | Okta - First Seen Client ID/ASN combo in successful OIDC token grant for{{user_username}} from ASN {{srcDevice_ip_asnNumber}} |
| Summary Expression | Okta - First Seen Client ID in successful OIDC token grant for Client ID:{{user_username}} from {{device_ip}} |
| Retention Window | 3024000000 |
| Baseline Window | 2592000000 |
| Baseline Type | GLOBAL |
| Score/Severity | Static: 3 |
| Enabled by Default | True |
| Prototype | False |
| Tags | _mitreAttackTactic:TA0005, _mitreAttackTactic:TA0008, _mitreAttackTechnique:T1550.001 |
| Origin | Field |
|---|---|
| Direct from Record | fields['actor.displayName'] |
| Normalized Schema | metadata_deviceEventId |
| Normalized Schema | metadata_vendor |
| Normalized Schema | srcDevice_ip_asnNumber |
| Normalized Schema | success |
| Normalized Schema | user_username |