Suspicious Endpoint Security Parent Process

Elastic Stack Serverless Security

A suspicious Endpoint Security parent process was detected. This may indicate a process hollowing or other form of code injection.

Rule type: eql

Rule indices:

winlogbeat-*
logs-endpoint.events.*
logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Elastic
Host
Windows
Threat Detection
Defense Evasion

Version: 101

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

Rule query

		process where event.type == "start" and
 process.name : ("esensor.exe", "elastic-endpoint.exe") and
 process.parent.executable != null and
  /* add FPs here */
 not process.parent.executable : ("C:\\Program Files\\Elastic\\*",
                                  "C:\\Windows\\System32\\services.exe",
                                  "C:\\Windows\\System32\\WerFault*.exe",
                                  "C:\\Windows\\System32\\wermgr.exe")

	

Framework: MITRE ATT&CKTM

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/