AWS EC2 Snapshot Activity
editAWS EC2 Snapshot Activity
editAn 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
Rule indices:
- filebeat-*
- logs-aws*
Severity: medium
Risk score: 47
Runs every: 10 minutes
Searches indices from: now-60m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Cloud
- AWS
- Continuous Monitoring
- SecOps
- Asset Visibility
Version: 5 (version history)
Added (Elastic Stack release): 7.9.0
Last modified (Elastic Stack release): 7.13.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positives
editIAM users may occasionally share EC2 snapshots with another AWS account belonging to the same organization. If known behavior is causing false positives, it can be exempted from the rule.
Investigation guide
editConfig
The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule query
editevent.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:ModifySnapshotAttribute
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Exfiltration
- ID: TA0010
- Reference URL: https://attack.mitre.org/tactics/TA0010/
-
Technique:
- Name: Transfer Data to Cloud Account
- ID: T1537
- Reference URL: https://attack.mitre.org/techniques/T1537/
Rule version history
edit- Version 5 (7.13.0 release)
-
- Formatting only
- Version 4 (7.12.0 release)
-
- Formatting only
- 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
-