IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

« Agent Spoofing - Mismatched Agent ID Anomalous Linux Compiler Activity »

› › ›

Agent Spoofing - Multiple Hosts Using Same Agent

edit

Agent Spoofing - Multiple Hosts Using Same Agent

edit

Detects when multiple hosts are using the same agent ID. This could occur in the event of an agent being taken over and used to inject illegitimate documents into an instance as an attempt to spoof events in order to masquerade actual activity to evade detection.

Rule type: threshold

Rule indices:

logs-*
metrics-*
traces-*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

Tags:

Elastic
Threat Detection
Defense Evasion

Version: 3 (version history)

Added (Elastic Stack release): 7.14.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

edit

This is meant to run only on datasources using Elastic Agent 7.14+ since versions prior to that will be missing the necessary field, resulting in false positives.

Rule query

edit

event.agent_id_status:*

Threat mapping

edit

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Masquerading
- ID: T1036
- Reference URL: https://attack.mitre.org/techniques/T1036/

Rule version history

edit

Version 3 (8.4.0 release)

Formatting only

Version 2 (8.1.0 release)

Formatting only

« Agent Spoofing - Mismatched Agent ID Anomalous Linux Compiler Activity »