IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« EggShell Backdoor Execution Emond Rules Creation or Modification »
Elastic Docs ›Elastic Security Solution [8.3] ›Detections and alerts ›Prebuilt rule reference

Elastic Agent Service Terminated

edit

Elastic Agent Service Terminated

edit

Identifies the Elastic endpoint agent has stopped and is no longer running on the host. Adversaries may attempt to disable security monitoring tools in an attempt to evade detection or prevention capabilities during an intrusion. This may also indicate an issue with the agent itself and should be addressed to ensure defensive measures are back in a stable state.

Rule type: eql

Rule indices:

  • logs-*

Severity: medium

Risk score: 47

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
  • Host
  • Linux
  • Windows
  • macOS
  • Threat Detection
  • Defense Evasion

Version: 1

Added (Elastic Stack release): 8.3.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

edit
## Config

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule query

edit
process where /* net, sc or wmic stopping or deleting Elastic Agent on
Windows */ (event.type == "start" and process.name : ("net.exe",
"sc.exe", "wmic.exe","powershell.exe","taskkill.exe","PsKill.exe","Pro
cessHacker.exe") and process.args : ("stopservice","uninstall",
"stop", "disabled","Stop-Process","terminate","suspend") and
process.args : ("elasticendpoint", "Elastic Agent","elastic-
agent","elastic-endpoint")) or /* service or systemctl used to stop
Elastic Agent on Linux */ (event.type == "end" and (process.name :
("systemctl","service") and process.args : ("elastic-agent",
"stop")) or /* Unload Elastic Agent extension on MacOS */
(process.name : "kextunload" and process.args :
"com.apple.iokit.EndpointSecurity" and event.action : "end"))

Threat mapping

edit

Framework: MITRE ATT&CKTM

« EggShell Backdoor Execution Emond Rules Creation or Modification »