I'm getting a fair number of these events being logged, this one is trying the account "sales" but there are others as well that don't exist, someone/something is obviously trying different accounts hoping one works...My question is, is there anyway to tell where this is coming from? In the network section it doesn't actually have any infomation logged..other than a workstation name that does not existing anywhere on the local network..I can lock other services/ports on the firewall but there really isn't much open not other than some exchange services, iis, etc. any thoughts about a service or other suggestions on where to look to narrow this down?
Log Name: Security
Date: 9/16/2015 7:50:22 PM
Event ID: 4625
Task Category: Logon
Keywords: Audit Failure
An account failed to log on.
Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Account Name: sales
Failure Reason: Unknown user name or bad password.
Sub Status: 0xc0000064
Caller Process ID: 0x0
Caller Process Name: -
Workstation Name: WIN-F2REQONOU39
Source Network Address: -
Source Port: -
Detailed Authentication Information:
Logon Process: NtLmSsp
Authentication Package: NTLM
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.
<Execution ProcessID="988" ThreadID="320" />