Rules: AWS CloudTrail - Aggressive Reconnaissance
This signal identifies when a large variety of different AWS CloudTrail event ids are observed in a short period of time. The event id's are generally related to reconnaissance. This signal can indicate that an aggressive scan of AWS resources is underway.
| Detail | Value |
|---|---|
| Type | Aggregation |
| Category | Discovery |
| Apply Risk to Entities | device_hostname, device_ip, user_username, srcDevice_ip |
| Signal Name | AWS CloudTrail - Aggressive Reconnaissance |
| Summary Expression | AWS CloudTrail reconnaissance activity detected by user: {{user_username}} from source IP: {{srcDevice_ip}} |
| Aggregation Window | 30m |
| Score/Severity | Static: 1 |
| Enabled by Default | True |
| Prototype | True |
| Tags | _mitreAttackTactic:TA0007, _mitreAttackTechnique:T1069, _mitreAttackTechnique:T1087, _mitreAttackTechnique:T1069.003, _mitreAttackTechnique:T1087.004 |
| Origin | Field |
|---|---|
| Normalized Schema | device_hostname |
| Normalized Schema | device_ip |
| Normalized Schema | distinct_eventid_count |
| Normalized Schema | listMatches |
| Normalized Schema | metadata_deviceEventId |
| Normalized Schema | metadata_product |
| Normalized Schema | metadata_vendor |
| Normalized Schema | srcDevice_ip |
| Normalized Schema | user_username |