Admin User Remote Logon — Sigma Rule

Rule metadata and linked tags

Author: juju4. Source status: test; severity: low. Source dates: 2017-10-29 / 2022-10-09.

{
  "product": "windows",
  "service": "security",
  "definition": "Requirements: Identifiable administrators usernames (pattern or special unique character. ex: \"Admin-*\"), internal policy mandating use only as secondary account"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 476b371e5a0af1baebcd7ba5553bc36a4e0949aab8226ec23e5f4ed54eca31d7

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Admin User Remote Logon
id: 0f63e1ef-1eb9-4226-9d54-8927ca08520a
status: test
description: Detect remote login by Administrator user (depending on internal pattern).
references:
    - https://car.mitre.org/wiki/CAR-2016-04-005
author: juju4
date: 2017-10-29
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.lateral-movement
    - attack.initial-access
    - attack.stealth
    - attack.t1078.001
    - attack.t1078.002
    - attack.t1078.003
    - car.2016-04-005
logsource:
    product: windows
    service: security
    definition: 'Requirements: Identifiable administrators usernames (pattern or special unique character. ex: "Admin-*"), internal policy mandating use only as secondary account'
detection:
    selection:
        EventID: 4624
        LogonType: 10
        AuthenticationPackageName: Negotiate
        TargetUserName|startswith: 'Admin'
    condition: selection
falsepositives:
    - Legitimate administrative activity.
level: low

Original YAML and metadata in JSON

False positives

• Legitimate administrative activity.

Source references

• https://car.mitre.org/wiki/CAR-2016-04-005