Zabbix regexp preprocessing with event id log 4624 problem

[ester]

Hello everybody;
I create item eventlog(Security,,,4624) and preprocessing then regular expression create. New Logon:abcd. It is okey but i adding Source Network Address is not runnig;
Working regexp; https://regex101.com/r/1N1pOy/1 ; this regex for zabbix output \1\3 => New Logon:mcanbaz => it is working
Not working regexp; https://regex101.com/r/SjWti4/1 ; this regex for zabbix output \1\3\7 => New Logon:mcanbaz 192.168.0.10 => it is not working

[Sebastian]

Hello ester, could you please post your exact configuration? I will try to recreate this.

[ester]

Hello ester, could you please post your exact configuration? I will try to recreate this.

eventlog[Security,,,,4648]

(New Logon(.*\n+.*\n+.|[\r\n\w:\s-]+)Account Name:\s+((?i)\b(?!System)[a-zA-Z0-9]+)(.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.* \n+)(Network Information(.*\n+.*\n+.|[\r\n\w:\s-]+)Source Network Address:\s+((?i)\b(?!System)[\w.]+) \1\3\7

eventlog:

Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 06/05/2021 14:57:25
Event ID: 4624
Task Category: Logon
Level: Information
Keywords: Audit Success
User: N/A
Computer: WebServer04
Description:
An account was successfully logged on.

Subject:
Security ID: SYSTEM
Account Name: WEBSERVER04$
Account Domain: WORKGROUP
Logon ID: 0x3E7

Logon Information:
Logon Type: 7
Restricted Admin Mode: -
Virtual Account: No
Elevated Token: No

Impersonation Level: Impersonation

New Logon:
Security ID: WEBSERVER04\mcanbaz
Account Name: mcanbaz
Account Domain: WEBSERVER04
Logon ID: 0x3F24B81
Linked Logon ID: 0x3F24B63
Network Account Name: -
Network Account Domain: -
Logon GUID: {00000000-0000-0000-0000-000000000000}

Process Information:
Process ID: 0x614
Process Name: C:\Windows\System32\svchost.exe

Network Information:
Workstation Name: WEBSERVER04
Source Network Address: 192.168.0.10
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 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 impersonation level field indicates the extent to which a process in the logon session can impersonate.

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>2</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2021-05-06T11:57:25.145285700Z" />
<EventRecordID>112238</EventRecordID>
<Correlation ActivityID="{80931da6-4143-0001-071f-93804341d701}" />
<Execution ProcessID="680" ThreadID="8644" />
<Channel>Security</Channel>
<Computer>WebServer04</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-18</Data>
<Data Name="SubjectUserName">WEBSERVER04$</Data>
<Data Name="SubjectDomainName">WORKGROUP</Data>
<Data Name="SubjectLogonId">0x3e7</Data>
<Data Name="TargetUserSid">S-1-5-21-2305414523-2991885378-3430239152-1000</Data>
<Data Name="TargetUserName">mcanbaz</Data>
<Data Name="TargetDomainName">WEBSERVER04</Data>
<Data Name="TargetLogonId">0x3f24b81</Data>
<Data Name="LogonType">7</Data>
<Data Name="LogonProcessName">User32 </Data>
<Data Name="AuthenticationPackageName">Negotiate</Data>
<Data Name="WorkstationName">WEBSERVER04</Data>
<Data Name="LogonGuid">{00000000-0000-0000-0000-000000000000}</Data>
<Data Name="TransmittedServices">-</Data>
<Data Name="LmPackageName">-</Data>
<Data Name="KeyLength">0</Data>
<Data Name="ProcessId">0x614</Data>
<Data Name="ProcessName">C:\Windows\System32\svchost.exe </Data>
<Data Name="IpAddress">192.168.0.10</Data>
<Data Name="IpPort">0</Data>
<Data Name="ImpersonationLevel">%%1833</Data>
<Data Name="RestrictedAdminMode">-</Data>
<Data Name="TargetOutboundUserName">-</Data>
<Data Name="TargetOutboundDomainName">-</Data>
<Data Name="VirtualAccount">%%1843</Data>
<Data Name="TargetLinkedLogonId">0x3f24b63</Data>
<Data Name="ElevatedToken">%%1843</Data>
</EventData>
</Event>

[Sebastian]

You can check with the following settings:

I was able to recreate it on my installation and got it working well.

Key:

eventlog[Security,,,,4624]

RegEx:

New Logon:[^*]*Account Name:        (?!System)(.*)[^*]*Network Information:[^*]*(\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}\b)

New Logon:\1 \2

[Wolfe263]

Count of matched lines in log file monitoring with log rotation support.

ElonOne