IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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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.*
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: Persistence
Tactic: Credential Access
Data Source: Elastic Endgame
Data Source: Elastic Defend

Version: 106

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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registry where host.os.type == "windows" and registry.data.strings : "?*" and
  registry.path : (
    "HKLM\\SYSTEM\\*ControlSet*\\Services\\*\\NetworkProvider\\ProviderPath",
    "\\REGISTRY\\MACHINE\\SYSTEM\\*ControlSet*\\Services\\*\\NetworkProvider\\ProviderPath"
  ) and
  /* Excluding default NetworkProviders RDPNP, LanmanWorkstation and webclient. */
  not (
    user.id : "S-1-5-18" and
    registry.data.strings : (
        "%SystemRoot%\\System32\\ntlanman.dll",
        "%SystemRoot%\\System32\\drprov.dll",
        "%SystemRoot%\\System32\\davclnt.dll",
        "%SystemRoot%\\System32\\vmhgfs.dll",
        "?:\\Program Files (x86)\\Citrix\\ICA Client\\x64\\pnsson.dll",
        "?:\\Program Files\\Dell\\SARemediation\\agent\\DellMgmtNP.dll",
        "?:\\Program Files (x86)\\CheckPoint\\Endpoint Connect\\\\epcgina.dll"
    )
  )

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
Technique:
- Name: Modify Authentication Process
- ID: T1556
- Reference URL: https://attack.mitre.org/techniques/T1556/
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Create or Modify System Process
- ID: T1543
- Reference URL: https://attack.mitre.org/techniques/T1543/

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