This documentation contains work-in-progress information for future Elastic Stack and Cloud releases. Use the version selector to view supported release docs. It also contains some Elastic Cloud serverless information. Check out our serverless docs for more details.

« AWS EC2 Encryption Disabled AWS EC2 Network Access Control List Creation »

› › ›

AWS EC2 Full Network Packet Capture Detected

edit

AWS EC2 Full Network Packet Capture Detected

edit

Identifies potential Traffic Mirroring in an Amazon Elastic Compute Cloud (EC2) instance. Traffic Mirroring is an Amazon VPC feature that you can use to copy network traffic from an Elastic network interface. This feature can potentially be abused to exfiltrate sensitive data from unencrypted internal traffic.

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
Network Security

Version: 101 (version history)

Added (Elastic Stack release): 7.14.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Elastic, Austin Songer

Rule license: Elastic License v2

Potential false positives

edit

Traffic Mirroring may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Traffic Mirroring from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

Investigation guide

edit

Rule query

edit

event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and
event.action:(CreateTrafficMirrorFilter or
CreateTrafficMirrorFilterRule or CreateTrafficMirrorSession or
CreateTrafficMirrorTarget) and event.outcome:success

Threat mapping

edit

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Exfiltration
- ID: TA0010
- Reference URL: https://attack.mitre.org/tactics/TA0010/
Technique:
- Name: Automated Exfiltration
- ID: T1020
- Reference URL: https://attack.mitre.org/techniques/T1020/
Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
Technique:
- Name: Data Staged
- ID: T1074
- Reference URL: https://attack.mitre.org/techniques/T1074/

Rule version history

edit

Version 101 (8.6.0 release)

Formatting only

Version 100 (8.5.0 release)

Formatting only

Version 4 (8.4.0 release)

Updated query, changed from:

event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and
event.action:(CreateTrafficMirrorFilter or
CreateTrafficMirrorFilterRule or CreateTrafficMirrorSession or
CreateTrafficMirrorTarget) and event.outcome:success

Version 2 (7.15.0 release)

Formatting only

« AWS EC2 Encryption Disabled AWS EC2 Network Access Control List Creation »