A Kerberos authentication ticket (TGT) was requested

// EVENT DEFINITION:

A Kerberos Ticket Granting Ticket (TGT) was requested from the Domain Controller KDC.

// DETAILED TELEMETRY & CONTEXT:

Event ID 4768 is logged on Domain Controllers during initial domain authentication when a user requests a TGT (`AS-REQ`). Failure entries (`Result Code: 0x6` username not found, `0x18` bad password, `0x12` account disabled/locked) reveal Kerberos brute-force or password spraying across the domain.

[ ! ]Failure Reason / Root Cause Analysis

Initial user domain login, or Kerberos password spraying (`Result Code: 0x18`).

Operational Metadata & Applicability

Log Category:Kerberos

Audit Type Classification:Success / Failure Audit

Supported Operating Systems:Windows Server 2016, 2019, 2022 / Windows Client 10, 11 (Enterprise / Pro)

Threat Hunting Keywords:

kerberos tgtas-req0x180x6kdcticket granting ticketgolden ticket

MITRE ATT&CK Framework Alignment

T1110.003

Brute Force: Password SprayingTactic: Credential Access

T1558.001

Steal or Forge Kerberos Tickets: Golden TicketTactic: Credential Access

Mitigation Playbook & Recommended SOC Actions

•Monitor for high volumes of Event ID 4768 with `Result Code: 0x18` originating from single client IP addresses across many usernames.
•Track `Ticket Encryption Type` to ensure legacy RC4 (`0x17`) is being phased out in favor of AES-256 (`0x12`).

Representative Windows Event XML Schema

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
    <EventID>4768</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>12544</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8020000000000000</Keywords>
    <TimeCreated SystemTime="2026-07-17T09:54:44.324Z" />
    <EventRecordID>1048576</EventRecordID>
    <Correlation />
    <Execution ProcessID="612" ThreadID="1024" />
    <Channel>Security</Channel>
    <Computer>DC01.enterprise.internal</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="SubjectUserSid">S-1-5-18</Data>
    <Data Name="SubjectUserName">SYSTEM</Data>
    <Data Name="SubjectDomainName">NT AUTHORITY</Data>
    <Data Name="SubjectLogonId">0x3e7</Data>
    <!-- Event telemetry fields specific to A Kerberos authentication ticket (TGT) was requested -->
  </EventData>
</Event>

Correlated / Related Security Event IDs

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