SolarWinds Process Disabling Services via Registry

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SolarWinds Process Disabling Services via Registry

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Identifies a SolarWinds binary modifying the start type of a service to be disabled. An adversary may abuse this technique to manipulate relevant security services.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.registry-*
  • logs-windows.sysmon_operational-*
  • endgame-*

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:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Defense Evasion
  • Tactic: Initial Access
  • Data Source: Elastic Endgame
  • Data Source: Elastic Defend
  • Data Source: Sysmon

Version: 110

Rule authors:

  • Elastic

Rule license: Elastic License v2

Setup

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Setup

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 version 8.2. Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate event.ingested to @timestamp. For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html

Rule query

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registry where host.os.type == "windows" and registry.path : (
    "HKLM\\SYSTEM\\*ControlSet*\\Services\\*\\Start",
    "\\REGISTRY\\MACHINE\\SYSTEM\\*ControlSet*\\Services\\*\\Start"
  ) and
  registry.data.strings : ("4", "0x00000004") and
  process.name : (
      "SolarWinds.BusinessLayerHost*.exe",
      "ConfigurationWizard*.exe",
      "NetflowDatabaseMaintenance*.exe",
      "NetFlowService*.exe",
      "SolarWinds.Administration*.exe",
      "SolarWinds.Collector.Service*.exe",
      "SolarwindsDiagnostics*.exe")

Framework: MITRE ATT&CKTM