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Event ID: 4624 Source: Microsoft-Windows-Security-Auditing

Source
Microsoft-Windows-Security-Auditing
Level
Success Audit
Description
An account was successfully logged on.

Subject:
Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0

Logon Type: 3

New Logon:
Security ID: SYSTEM
Account Name: JDOE$
Account Domain: CONTOSO
Logon ID: 0x2b5a1cc
Logon GUID: {8d290146-94c0-cb12-53e0-fc3f3e7fa143}

Process Information:
Process ID: 0x0
Process Name: -

Network Information:
Workstation Name:
Source Network Address: ::1
Source Port: 54076

Detailed Authentication Information:
Logon Process: Kerberos
Authentication Package: Kerberos
Transited Services: -
Package Name (NTLM only): -
Key Length: 0

This event is generated when a logon session is created. It is generated on the computer that was accessed.

The subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service or a local process such as Winlogon.exe or Services.exe.

The logon type field indicates the kind of logon that occurred. The most common types are 2 (interactive) and 3 (network).

The New Logon fields indicate the account for whom the new logon was created i.e. the account that was logged on.

The network fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.

The authentication information fields provide detailed information about this specific logon request.
- Logon GUID is a unique identifier that can be used to correlate this event with a KDC event.
- Transited services indicate which intermediate services have participated in this logon request.
- Package name indicates which sub-protocol was used among the NTLM protocols.
- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.

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