Process Creation via Secondary Logon

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Identifies process creation with alternate credentials. Adversaries may create a new process with a different token to escalate privileges and bypass access controls.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-system.*

Severity: medium

Risk score: 47

Runs every: 5m

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

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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sequence by host.id with maxspan=1m

[authentication where event.action:"logged-in" and
 event.outcome == "success" and user.id:"S-1-5-21-*" and

 /* seclogon service */
 process.name == "svchost.exe" and
 winlog.event_data.LogonProcessName : "seclogo*" and source.ip == "::1" ] by winlog.event_data.TargetLogonId

[process where event.type == "start"] by winlog.event_data.TargetLogonId

Framework: MITRE ATT&CKTM