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Elastic Docs ›Elastic Security Solution [8.16] ›Downloadable rule update v1.0.2

Account Discovery Command via SYSTEM Account

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Account Discovery Command via SYSTEM Account

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Identifies when the SYSTEM account uses an account discovery utility. This could be a sign of discovery activity after an adversary has achieved privilege escalation.

Rule type: eql

Rule indices:

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

Severity: low

Risk score: 21

Runs every: 5m

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

Maximum alerts per execution: 100

References: None

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Discovery

Version: 11

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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## 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

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process where event.type in ("start", "process_started") and
  (?process.Ext.token.integrity_level_name : "System" or
  ?winlog.event_data.IntegrityLevel : "System") and
  (process.name : "whoami.exe" or
  (process.name : "net1.exe" and not process.parent.name : "net.exe"))

Framework: MITRE ATT&CKTM

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