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Elastic Docs ›Elastic Security Solution [8.4] ›Detections and alerts ›Prebuilt rule reference

Network Logon Provider Registry Modification

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Network Logon Provider Registry Modification

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Identifies the modification of the network logon provider registry. Adversaries may register a rogue network logon provider module for persistence and/or credential access via intercepting the authentication credentials in clear text during user logon.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*

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

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Persistence
  • Credential Access

Version: 4 (version history)

Added (Elastic Stack release): 7.13.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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Authorized third party network logon providers.

Rule query

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registry where registry.data.strings != null and registry.path : "HKL
M\\SYSTEM\\*ControlSet*\\Services\\*\\NetworkProvider\\ProviderPath"
and /* Excluding default NetworkProviders RDPNP, LanmanWorkstation
and webclient. */ not ( user.id : "S-1-5-18" and
registry.data.strings in
("%SystemRoot%\\System32\\ntlanman.dll",
"%SystemRoot%\\System32\\drprov.dll",
"%SystemRoot%\\System32\\davclnt.dll") )

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 4 (8.4.0 release)
  • Formatting only
Version 3 (8.2.0 release)
  • Formatting only
Version 2 (8.1.0 release)
  • Formatting only
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