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suspicious 0x0 Login ID and behavior in 4624 Security Event Viewer RRS feed

  • Question

  • Is the following 4624 Security Event on a Windows 10 network Client something to be concerned about?
    Could a local Service or process generate this logon?
    It starts with a 4672 'special Logon' , with the 4624 directly after and a 4634 Logoff one second after.

    I am concerned about the lack of identifying information in the subject and the NULL SID , 0x0 Login ID and The Impersonation Level:  of  'Impersonation'

    I should also add that directly after the Logon event, there is a Logoff.

    I X'd out the username and Domain name below.

    Any information to educate would be much appreciated!

    Below is from the 4624:

    An account was successfully logged on.

    Subject:
     Security ID:  NULL SID
     Account Name:  -
     Account Domain:  -
     Logon ID:  0x0
    Logon Information:
     Logon Type:  3
     Restricted Admin Mode: -
     Virtual Account:  No
     Elevated Token:  Yes

    Impersonation Level:  Impersonation

    New Logon:

     Security ID:  SYSTEM
     Account Name:  WKS-XXX$
     Account Domain:  XXXDOMAIN.COM
     Logon ID:  0x18A5162X
     Linked Logon ID:  0x0
     Network Account Name: -
     Network Account Domain: -
     Logon GUID:  {66c5feca-b87c-d454-d016-c704f01f76e1}
    Process Information:
     Process ID:  0x0
     Process Name:  -
    Network Information:
     Workstation Name: -
     Source Network Address: ::1
     Source Port:  0

    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 impersonation level field indicates the extent to which a process in the logon session can impersonate.
    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.

    Wednesday, May 30, 2018 8:16 PM

Answers