Author Posts

May 27, 2014 at 10:44 pm

I'm wanting to pull the "Account Name: Person's name" from the Message property under Get-Eventlog. After i pipe it i use the hash table below, but it pulls the all the property Message's message. I tried using "\b" for boundaries but didn't change. I am trying to learn regular expression, so not sure if I am misunderstanding the expressions meanings.

select @{n='Message'; e={$_.Message -replace "'^(Account Name:.)$','$1'}}

Thank you for any help

May 27, 2014 at 11:18 pm


Would you be able to attach a full example of the event log message (obfuscate any sensitive info) and the command line used to retrieve it?

May 28, 2014 at 12:27 am

Get-EventLog -LogName Security -InstanceId 4624 | select TimeGenerated, @{n='Message'; e={$_.Message -replace “'^(Account Name:.)$','$1′}} | format-list

May 28, 2014 at 2:39 am

sorry I thought you meant event cmd that i was using

Message : An account was successfully logged on.

Security ID: S-1-5-18
Account Name: SO-PC$
Account Domain: WORKGROUP
Logon ID: 0x3e7

Logon Type: 2

New Logon:
Security ID: S-1-5-21-2415982056-31499485-2897633832-1007
Account Name: Salamone
Account Domain: SO-PC
Logon ID: 0x1ec8b42
Logon GUID: {00000000-0000-0000-0000-000000000000}

Process Information:
Process ID: 0x12ec
Process Name: C:\Windows\System32\winlogon.exe

Network Information:
Workstation Name: SCOO-PC
Source Network Address:
Source Port: 0

Detailed Authentication Information:
Logon Process: User32
Authentication Package: Negotiate
Transited Services: –
Package Name (NTLM only): –
Key Length: 0

This event is generated when a logon session is created. It is genera.....

May 28, 2014 at 6:05 am

There's an easier way. Use the ReplacementStrings collection instead of the message property:

Get-EventLog -LogName Security -InstanceId 4624 -Newest 1 | Select-Object -Property TimeGenerated, @{Label='UserName';Expression={$_.ReplacementStrings[1]}}

May 28, 2014 at 6:19 am

Nice Mike 🙂 PowerShell is soo powerful so one tend to forget the simplest of ways to use it! 🙂

May 28, 2014 at 8:00 pm

That worked perfectly thank you.