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.*
- 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
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
Version: 104
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editregistry where host.os.type == "windows" and event.type:"change" and
registry.path: (
"HKLM\\SYSTEM\\*ControlSet*\\Services\\W32Time\\TimeProviders\\*",
"\\REGISTRY\\MACHINE\\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/
-
Technique:
- Name: Boot or Logon Autostart Execution
- ID: T1547
- Reference URL: https://attack.mitre.org/techniques/T1547/
-
Sub-technique:
- Name: Time Providers
- ID: T1547.003
- Reference URL: https://attack.mitre.org/techniques/T1547/003/