Network Logon Provider Registry Modificationedit
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: 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
- Elastic Endgame
Version: 101 (version history)
Added (Elastic Stack release): 7.13.0
Last modified (Elastic Stack release): 8.6.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
Authorized third party network logon providers.
Rule queryedit
registry where registry.data.strings != null and registry.path : (
"HKLM\\SYSTEM\\*ControlSet*\\Services\\*\\NetworkProvider\\ProviderPat
h", "\\REGISTRY\\MACHINE\\SYSTEM\\*ControlSet*\\Services\\*\\Netwo
rkProvider\\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 mappingedit
Framework: MITRE ATT&CKTM
-
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/
Rule version historyedit
- Version 101 (8.6.0 release)
-
-
Updated query, changed from:
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") )
-
- Version 100 (8.5.0 release)
-
- Formatting only
- Version 4 (8.4.0 release)
-
- Formatting only
- Version 3 (8.2.0 release)
-
- Formatting only
- Version 2 (8.1.0 release)
-
- Formatting only