50,000 failed log ins in event viewer on server a day event ID 4625
Posted on 2015-02-10
I am currently getting over 50,000 failed logins a day from the user created on server that in the cert publishers group. This is the error showing in event viewer. Any help will be appreciated.
An account failed to log on.
Security ID: SYSTEM
Account Name: DCJT28Y1$
Account Domain: rochdale
Logon ID: 0x3E7
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Failure Reason: Unknown user name or bad password.
Sub Status: 0xC0000064
Caller Process ID: 0x294
Caller Process Name: C:\Windows\System32\lsass.exe
Workstation Name: DCJT28Y1
Source Network Address: -
Source Port: -
Detailed Authentication Information:
Logon Process: Schannel
Authentication Package: Kerberos
Transited Services: -
Package Name (NTLM only): -
Key Length: 0
This event is generated when a logon request fails. It is generated on the computer where access was attempted.
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 was requested. The most common types are 2 (interactive) and 3 (network).
The Process Information fields indicate which account and process on the system requested the logon.
The Network Information 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.
- 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.