An attempt was made to modify AWS EC2 snapshot attributes. Snapshots are sometimes shared by threat actors in order to exfiltrate bulk data from an EC2 fleet. If the permissions were modified, verify the snapshot was not shared with an unauthorized or unexpected AWS account.
Rule type: query
Risk score: 47
Runs every: 10 minutes
Maximum alerts per execution: 100
- Continuous Monitoring
- Asset Visibility
Version: 3 (version history)
Added (Elastic Stack release): 7.9.0
Last modified (Elastic Stack release): 7.11.2
Rule authors: Elastic
Rule license: Elastic License
IAM users may occasionally share EC2 snapshots with another AWS account belonging to the same organization. If a known behavior is causing false positives, it can be excluded from the rule.
The AWS Filebeat module must be enabled to use this rule.
event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:ModifySnapshotAttribute
Framework: MITRE ATT&CKTM
- Version 3 (7.11.2 release)
- Formatting only
- Version 2 (7.10.0 release)
Updated query, changed from:
event.module:aws and event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:ModifySnapshotAttribute