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Enumeration of Administrator Accounts

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Enumeration of Administrator Accounts

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Identifies instances of lower privilege accounts enumerating Administrator accounts or groups using built-in Windows tools.

Rule type: eql

Rule indices:

logs-endpoint.events.*
winlogbeat-*
logs-windows.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Elastic
Host
Windows
Threat Detection
Discovery

Version: 4

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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process where event.type in ("start", "process_started") and
  (((process.name : "net.exe" or process.pe.original_file_name == "net.exe") or
    ((process.name : "net1.exe" or process.pe.original_file_name == "net1.exe") and
        not process.parent.name : "net.exe")) and
   process.args : ("group", "user", "localgroup") and
   process.args : ("admin", "Domain Admins", "Remote Desktop Users", "Enterprise Admins", "Organization Management") and
   not process.args : "/add")

   or

  ((process.name : "wmic.exe" or process.pe.original_file_name == "wmic.exe") and
     process.args : ("group", "useraccount"))

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
Technique:
- Name: Permission Groups Discovery
- ID: T1069
- Reference URL: https://attack.mitre.org/techniques/T1069/
Sub-technique:
- Name: Domain Groups
- ID: T1069.002
- Reference URL: https://attack.mitre.org/techniques/T1069/002/
Technique:
- Name: Account Discovery
- ID: T1087
- Reference URL: https://attack.mitre.org/techniques/T1087/

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