It's definately some sort of attack. 21 times all accounts.
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 1/28/2013 11:34:08 PM
Event ID: 4797
Task Category: User Account Management
Level: Information
Keywords: Audit Success
User: N/A
Computer: phenom
Description:
An attempt was made to query the existence of a blank password for an account.
Subject:
Security ID: phenom\crusader
Account Name: crusader
Account Domain: phenom
Logon ID: 0xA068D
Additional Information:
Caller Workstation: PHENOM
Target Account Name: DrHaze
Target Account Domain: phenom
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>4797</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>13824</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2013-01-29T04:34:08.308305800Z" />
<EventRecordID>42164</EventRecordID>
<Correlation />
<Execution ProcessID="1000" ThreadID="3832" />
<Channel>Security</Channel>
<Computer>phenom</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-21-1124263850-194828415-1399416522-1001</Data>
<Data Name="SubjectUserName">crusader</Data>
<Data Name="SubjectDomainName">phenom</Data>
<Data Name="SubjectLogonId">0xa068d</Data>
<Data Name="Workstation">PHENOM</Data>
<Data Name="TargetUserName">DrHaze</Data>
<Data Name="TargetDomainName">phenom</Data>
</EventData>
</Event>
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 1/28/2013 11:34:08 PM
Event ID: 4797
Task Category: User Account Management
Level: Information
Keywords: Audit Success
User: N/A
Computer: phenom
Description:
An attempt was made to query the existence of a blank password for an account.
Entire log located here...
http://pastie.org/5953014