Vulnerable Netlogon Secure Channel Connection Allowed — Sigma Rule

Rule metadata and linked tags

Author: NVISO. Source status: test; severity: high. Source dates: 2020-09-15 / 2022-12-25.

{
  "product": "windows",
  "service": "system"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1ce7d283376a4fbc19955ea84aebed0c633041abca8870bf9ddaecc030246088

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: Vulnerable Netlogon Secure Channel Connection Allowed
id: a0cb7110-edf0-47a4-9177-541a4083128a
status: test
description: Detects that a vulnerable Netlogon secure channel connection was allowed, which could be an indicator of CVE-2020-1472.
references:
    - https://support.microsoft.com/en-us/help/4557222/how-to-manage-the-changes-in-netlogon-secure-channel-connections-assoc
author: NVISO
date: 2020-09-15
modified: 2022-12-25
tags:
    - attack.privilege-escalation
    - attack.t1548
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: NetLogon  # Active Directory: NetLogon ETW GUID {F33959B4-DBEC-11D2-895B-00C04F79AB69}
        EventID: 5829
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://support.microsoft.com/en-us/help/4557222/how-to-manage-the-changes-in-netlogon-secure-channel-connections-assoc