User with Privileges Logon

SIGMA detection rule by frack113 · NOASSERTION

Detects logon with "Special groups" and "Special Privileges" can be thought of as Administrator groups or privileges.

title: User with Privileges Logon
id: 94309181-d345-4cbf-b5fe-061769bdf9cb
status: test
description: Detects logon with "Special groups" and "Special Privileges" can be thought of as Administrator groups or privileges.
references:
    - https://github.com/Yamato-Security/EnableWindowsLogSettings/blob/7f6d755d45ac7cc9fc35b0cbf498e6aa4ef19def/ConfiguringSecurityLogAuditPolicies.md
    - https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4672
    - https://learn.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4964
author: frack113
date: 2022-10-14
modified: 2023-12-14
tags:
    - attack.lateral-movement
    - attack.credential-access
    - attack.t1558
    - attack.t1649
    - attack.t1550
logsource:
    service: security
    product: windows
detection:
    selection:
        EventID:
            - 4672
            - 4964
    filter_main_local_system:
        SubjectUserSid: 'S-1-5-18'
    filter_main_valid_account:
        SubjectUserName|expand: '%Admins_Workstations%' # Set valid internal naming pattern or a list a valid account
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: low

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

43da50f0-863d-490d-b12d-3bf3b7dea622

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

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[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

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