Potential Persistence via Time Provider Modification
editPotential Persistence via Time Provider Modification
editIdentifies modification of the Time Provider. Adversaries may establish persistence by registering and enabling a malicious DLL as a time provider. Windows uses the time provider architecture to obtain accurate time stamps from other network devices or clients in the network. Time providers are implemented in the form of a DLL file which resides in the System32 folder. The service W32Time initiates during the startup of Windows and loads w32time.dll.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
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:
- Elastic
- Host
- Windows
- Threat Detection
- Persistence
Version: 101
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editregistry where event.type:"change" and registry.path:"HKLM\\SYSTEM\\*ControlSet*\\Services\\W32Time\\TimeProviders\\*" and registry.data.strings:"*.dll"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
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Technique:
- Name: Boot or Logon Autostart Execution
- ID: T1547
- Reference URL: https://attack.mitre.org/techniques/T1547/
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Sub-technique:
- Name: Time Providers
- ID: T1547.003
- Reference URL: https://attack.mitre.org/techniques/T1547/003/