Dear Sirs,
I have doubt in my security access log from my PC.
I found there are many transactions generated from a computer with same IP.
Also, would you please tell me how to interpret the following log information?
================================================================
Log Name: SecuritySource: Microsoft-Windows-Security-Auditing
Date: 17/07/2015 4:07:08 PM
Event ID: 4624
Task Category: Logon
Level: Information
Keywords: Audit Success
User: N/A
Computer: WS2003.vangiek.com
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: ANONYMOUS LOGON
Account Name: ANONYMOUS LOGON
Account Domain: NT AUTHORITY
Logon ID: 0x4b9c189
Logon GUID: {00000000-0000-0000-0000-000000000000}
Process Information:
Process ID: 0x0
Process Name: -
Network Information:
Workstation Name: WS2002
Source Network Address: 172.16.30.30
Source Port: 18902
Detailed Authentication Information:
Logon Process: NtLmSsp
Authentication Package: NTLM
Transited Services: -
Package Name (NTLM only): NTLM V1
Key Length: 128
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.
Event Xml:
<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>4624</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2015-07-17T08:07:08.642126400Z" />
<EventRecordID>7210196</EventRecordID>
<Correlation />
<Execution ProcessID="644" ThreadID="9044" />
<Channel>Security</Channel>
<Computer>WS2003.vangiek.com</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-0-0</Data>
<Data Name="SubjectUserName">-</Data>
<Data Name="SubjectDomainName">-</Data>
<Data Name="SubjectLogonId">0x0</Data>
<Data Name="TargetUserSid">S-1-5-7</Data>
<Data Name="TargetUserName">ANONYMOUS LOGON</Data>
<Data Name="TargetDomainName">NT AUTHORITY</Data>
<Data Name="TargetLogonId">0x4b9c189</Data>
<Data Name="LogonType">3</Data>
<Data Name="LogonProcessName">NtLmSsp </Data>
<Data Name="AuthenticationPackageName">NTLM</Data>
<Data Name="WorkstationName">WS2002</Data>
<Data Name="LogonGuid">{00000000-0000-0000-0000-000000000000}</Data>
<Data Name="TransmittedServices">-</Data>
<Data Name="LmPackageName">NTLM V1</Data>
<Data Name="KeyLength">128</Data>
<Data Name="ProcessId">0x0</Data>
<Data Name="ProcessName">-</Data>
<Data Name="IpAddress">172.16.30.30</Data>
<Data Name="IpPort">18902</Data>
</EventData>
</Event>
=======================================================================
I wonder if anybody log into my pc without any authority and how I could prove it?
Thanks in advance.
Best regards,
Clara
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