Remove section from windows 2008r2 security log

[bizza]

I'm playing with WinEventLog:Security source, and I found a "-" username that altered my statistics.
In a generic login log, there is a section with this user, and I'm looking for a way to remove it and clean/normaliza my logs before they'll be indexed.

An example:

09/15/2011 01:41:18 PM

LogName=Security

SourceName=Microsoft Windows security auditing.

EventCode=4624

EventType=0

Type=Information

ComputerName=DC.domain.local

TaskCategory=Logon

OpCode=Info

RecordNumber=22396221

Keywords=Audit Success

Message=An account was successfully logged on.

Subject:
Security ID: S-1-0-0
Account Name: -
Account Domain: -
Logon ID: 0x0

Logon Type: 3

New Logon:
Security ID: S-1-5-21-1759315991-2675907183-3548838191-1129
Account Name: username
Account Domain: DOMAIN
Logon ID: 0x155b3446
Logon GUID: {FBB0AB00-6A66-14F3-0CF8-6709832A3FB8}

Process Information:
Process ID: 0x0
Process Name: -

Network Information:
Workstation Name:
Source Network Address: 10.x.y.z
Source Port: 50233

Detailed Authentication Information:
Logon Process: Kerberos
Authentication Package: Kerberos
Transited Services: -
Package Name (NTLM only): -
Key Length: 0

How I can remove the section:

Subject:
Security ID: S-1-0-0
Account Name: -
Account Domain: -
Logon ID: 0x0

from my log?

Regards
bizza

[Rob]

You might want to consider changing the search for your statistics to not include where Account Name/Domain fields are equal to to a -.

The other option is to take a look at using the SEDCMD parameter in your props.conf file and create a sed script to re-write those lines.

For example:

s/Account\sName:\s+\-//g

This would replace the "Account Name: -" line with an empty line.

Another option is to use a script (bash, batch, python, powershell, perl, etc.) to clean up the event before it is indexed to remove that particular section.