Audit basic events in Active Directory with Windows 2012.

I want to share a way to audit events in Active Directory with domain controllers on Windows 2012 and younger.
For servers with OS Windows 2012 and younger, a new method of collecting events "ForwardedEvents" appeared. First, configure the collection of events on the dedicated server:
1. Create the policy "AuditFrw" and apply to the OU "Domain Controllers"
Computer Configuration - Administrative Templates - Windows Components - Event Forwarding - Server=http://scr-server.blogspot.com:5985/wsman/SubscriptionManager/WEC,Refresh=120

Computer Configuration - Administrative Templates - Windows Components - Windows Remote Management (WinRM) - WinRMService - Allow remote server managment through WinRM - 1.1.1.0-1.1.1.50

Computer Configuration - Preferences - Control Panel Settings - Services - Service:WinRM - Start/Automatic(Delayed Start)

2. On the audit server scr-server.blogspot.com we create a subscription
Event Viewer - Subscriptions - Create Subscription
- Name:Base-Audit-AD
- Type: Source computer initiated
- Computers: "Domain Controllers"
- Events: 4728,4732,4756,4729,4733,4757,4720,4726,4727,4731,4754,4730,4734,4758,4741,4725,4740

3. Create a task on a schedule, for example: 7 am, every day, repeat every 12:00
and specify the script

Download Script

$hf = "D:\Scripts\Audit"

cd $hf

$s_date = (Get-date).AddDays(-0.5)

function ResolveSID ($sid) {

    $objSID = New-Object System.Security.Principal.SecurityIdentifier($sid)

    $objUser = $objSID.Translate([System.Security.Principal.NTAccount])

    Return $objUser.Value

}

#add to gr

$evs_add_to_gr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4728,4732,4756} -ea 0

if ($evs_add_to_gr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\AddUserToGorup\AddUserToGorup_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,Group,NewMember,AddedBy"

    $evs_add_to_gr = $evs_add_to_gr | sort TimeCreated | select TimeCreated,

    @{n="Group";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="NewMember";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "MemberSid"} | %{$_.’#text’}}},

    @{n="AddedBy";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_add_to_gr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.Group)

        $e_nm = ResolveSID($e.NewMember)

        $e_ab = ResolveSID($e.AddedBy)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_nm,$e_ab"

    }

}

#del from gr

$evs_del_from_gr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4729,4733,4757} -ea 0

if($evs_del_from_gr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\DelUserFromGroup\DelUserFromGroup_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,Group,DelMember,DelBy"

    $evs_del_from_gr = $evs_del_from_gr | sort TimeCreated | select TimeCreated,

    @{n="Group";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="DelMember";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "MemberSid"} | %{$_.’#text’}}},

    @{n="DelBy";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_del_from_gr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.Group)

        $e_nm = ResolveSID($e.DelMember)

        $e_ab = ResolveSID($e.DelBy)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_nm,$e_ab"

    }

}

#new gr

$evs_new_gr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4727,4731,4754} -ea 0

if ($evs_new_gr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\CreateGroup\CreateGroup_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,GroupName,AdminLogin"

    $evs_new_gr = $evs_new_gr | sort TimeCreated | select TimeCreated,

    @{n="Group";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="GroupName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_new_gr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.Group)

        if (!$e_gr) {$e_gr = $e.GroupName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

#del gr

$evs_del_gr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4730,4734,4758} -ea 0

if ($evs_del_gr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\DelGroup\DelGroup_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,GroupName,AdminLogin"

    $evs_del_gr = $evs_del_gr | sort TimeCreated | select TimeCreated,

    @{n="Group";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="GroupName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_del_gr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.Group)

        if (!$e_gr) {$e_gr = $e.GroupName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

#new usr

$evs_new_usr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4720} -ea 0

if ($evs_new_usr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\CreateUser\CreateUser_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,UserName,AdminLogin"

    $evs_new_usr = $evs_new_usr | sort TimeCreated | select TimeCreated,

    @{n="User";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="UserName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_new_usr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.User)

        if (!$e_gr) {$e_gr = $e.UserName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

#del usr

$evs_del_usr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4726} -ea 0

if ($evs_del_usr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\DelUser\DelUser_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,UserName,AdminLogin"

    $evs_del_usr = $evs_del_usr | sort TimeCreated | select TimeCreated,

    @{n="User";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="UserName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_del_usr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.User)

        if (!$e_gr) {$e_gr = $e.UserName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

#dis usr

$evs_dis_usr = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4725} -ea 0

if ($evs_dis_usr.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\DisableUser\DisableUser_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,UserName,AdminLogin"

    $evs_dis_usr = $evs_dis_usr | sort TimeCreated | select TimeCreated,

    @{n="User";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="UserName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_dis_usr) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.User)

        if (!$e_gr) {$e_gr = $e.UserName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

#new pc

$evs_new_pc = Get-WinEvent -FilterHashTable @{LogName='ForwardedEvents'; StartTime=$s_date; ID=4741} -ea 0

if ($evs_new_pc.count -gt 0) {

    $LogTime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"

    $LogFile = ".\Logs\CreatePC\CreatePC_" + $LogTime + ".csv"

    add-content -path $LogFile -value "TimeCreated,PCName,AdminLogin"

    $evs_new_pc = $evs_new_pc | sort TimeCreated | select TimeCreated,

    @{n="User";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetSid"} | %{$_.’#text’}}},

    @{n="UserName";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "TargetUserName"} | %{$_.’#text’}}},

    @{n="AdminLogin";e={([xml]$_.ToXml()).Event.EventData.Data | ? {$_.Name -eq "SubjectUserSid"} | %{$_.’#text’}}}

    foreach ($e in $evs_new_pc) {

        $e_gr = $e_nm = $e_ab = @()

        $e_gr = ResolveSID($e.User)

        if (!$e_gr) {$e_gr = $e.UserName}

        $e_ab = ResolveSID($e.AdminLogin)

        add-content -path $LogFile -value "$($e.TimeCreated),$e_gr,$e_ab"

    }

}

How to parse Windows DNS debug logs with Logparser: create statistics

In this article I share a powershell script that will help to identify anomalies in your DNS. Script create TOP-30 Queries and TOP-30 Clients. With the help of MS Logparser you can very quickly check the debug log files of windows-dns.

Download powershell script

1. Enable DNS debug log on all dns-servers
- set limit for file size
- set same path

2. Install on the PC from which you run the script Logparser

3. For script you have to set
- servers
- domains
- homefolder
- files with dns debug logs
- email server (anonymous smtp)
- user email

001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094

# Set variables $HomeFolder = "D:\Scripts" cd $HomeFolder $LogParser = "C:\Program Files (x86)\Log Parser 2.2\LogParser.exe" $Servers = @("dc1.blogspot.com","dc2.blogspot.com","dc3.blogspot.com") $msg = new-object Net.Mail.MailMessage $msg.From = "myscript@blogspot.com" $msg.To.add("i-evgeny@blogspot.com") $msg.Subject = "DNS-query statistics" $msg.IsBodyHTML = $true $SMTPServer = "smtp.blogspot.com" $SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 25) $LogTime = Get-Date -Format "yyyy-MM-dd_hh-mm-ss" if (!(test-path "$HomeFolder\Logs")) {New-Item -ItemType directory -Path "$HomeFolder\Logs"} $LogFile = $HomeFolder + "\Logs\DNSParser_"+$LogTime+".log" $LogFile_top_domain = $HomeFolder + "\Logs\DNSParser_top_domain_" + $LogTime + ".log" $LogFile_top_ip = $HomeFolder + "\Logs\DNSParser_top_ip_" + $LogTime + ".log" $TempFile = $HomeFolder + "\DNSTemp.csv" $DCs_str = "" $i = 1 foreach ($d in $Servers) {     if ($i -eq "1") {$DCs_str = "\\$($d)\c$\Scripts\Logs\Queries.log"     } else {$DCs_str += ",\\$($d)\c$\Scripts\Logs\Queries.log"}     $i++ } # Logparser query: group by query, client ip $query = """SELECT field8,CASE field16 WHEN NULL THEN field15 ELSE field16 END AS myquery INTO $($TempFile) FROM $DCs_str""" $LogParserStr = "-i:TSV -iSeparator:space -nFields:16 -headerRow:OFF -nSkipLines:30 -o:csv " + $query $LP = Start-Process -FilePath $LogParser -ArgumentList $LogParserStr -Wait -Passthru -NoNewWindow Start-Sleep -s 15 $query_top_domain = """SELECT myquery, COUNT(myquery) INTO $LogFile_top_domain FROM $TempFile GROUP BY myquery ORDER BY COUNT(myquery) DESC""" $LogParserStr = "-i:csv -o:csv " + $query_top_domain $LP = Start-Process -FilePath $LogParser -ArgumentList $LogParserStr -Wait -Passthru -NoNewWindow $query_top_ip = """SELECT Field8, COUNT(Field8) INTO $LogFile_top_ip FROM $TempFile GROUP BY field8 ORDER BY COUNT(field8) DESC""" $LogParserStr = "-i:csv -o:csv " + $query_top_ip $LP = Start-Process -FilePath $LogParser -ArgumentList $LogParserStr -Wait -Passthru -NoNewWindow # Transformation query $result_top_domain = import-csv $LogFile_top_domain $good_result_top_domain = @() for($i=0; $i -le 29; $i++) {      $t=@()      $good_name = $result_top_domain[$i].myquery -replace "\s" -replace "\(\d?\d\)","." -replace "^\." -replace "\.$"      $t = new-object PSObject -Property @{       Query = "$good_name";       C = "$($result_top_domain[$i]."COUNT(ALL myquery)")"      }      $good_result_top_domain += $t      $t=@() } # Create table for email $msg.Body = "<html> <body>TOP-30 Queries <br><br><table border=""0"" cellpadding=""3"" style=""font-size:8pt;font-family:Arial,sans-serif""> <tr bgcolor=""#dddddd""> <td valign=""top""><b>Query</b></td> <td valign=""top""><b>Count</b></td> </tr> <tr bgcolor=""#dddddd""> <td valign=""top"">" foreach ($g in $good_result_top_domain) {     $msg.Body += "$($g.query)</td><td valign=""top"">$($g.c)</td></tr><tr bgcolor=""#dddddd""><td valign=""top"">" } $result_top_ip = import-csv $LogFile_top_ip $msg.Body += "</td></tr></table><br>TOP-30 Clients <br><br><table border=""0"" cellpadding=""3"" style=""font-size:8pt;font-family:Arial,sans-serif""> <tr bgcolor=""#dddddd""> <td valign=""top""><b>Clients</b></td> <td valign=""top""><b>Count</b></td> </tr> <tr bgcolor=""#dddddd""> <td valign=""top"">" for($i=0; $i -le 29; $i++) {      $msg.Body += "$($result_top_ip[$i].field8)</td><td valign=""top"">$($result_top_ip[$i]."COUNT(ALL Field8)")</td></tr><tr bgcolor=""#dddddd""><td valign=""top"">" } $msg.Body += "</td></tr></table></body></html>" # Send statistics $SMTPClient.Send($msg)

4. Schedule a task, runas account must have read permission for Debug files

Example of result:

How to parse Windows DNS debug logs with Logparser for VIRUS (eg WannaCRY)

In this article I share a powershell script that will help to identify infected WannaCRY PCs and other botnet in your network. With the help of MS Logparser you can very quickly check the debug log files of windows-dns.

Download powershell script

1. At first enable DNS debug log on all dns-servers
- set limit for file size
- set same path (for script)

2. Install on the PC from which you run the script Logparser

3. For script you have to set
- servers
- domains
- homefolder
- file's path with dns debug logs
- email server (anonymous smtp)
- user email

001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056

# Set variables $HomeFolder = "D:\Scripts" cd $HomeFolder if (!(test-path "$HomeFolder\Logs")) {New-Item -ItemType directory -Path "$HomeFolder\Logs"} $LogParser = "C:\Program Files (x86)\Log Parser 2.2\LogParser.exe" $Servers = @("dc1.blogspot.com","dc2.blogspot.com","dc3.blogspot.com") $VirDomains = @("iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea","ifferfsodp9ifjaposdfjhgosurijfaewrwergwea","ayylmaoTJHSSTasdfasdfasdfasdfasdfasdfasdf","pingdavinci","wizardtesla","archimedus") $msg = new-object Net.Mail.MailMessage $msg.From = "myscript@blogspot.com" $msg.To.add("i-evgeny@blogspot.com") $msg.Subject = "Virus DNS Parser" $SMTPServer = "smtp.blogspot.com" $SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 25) $LogTime = Get-Date -Format "yyyy-MM-dd_hh-mm-ss" $LogFile = $HomeFolder + '\Logs\'+"parser_vir_"+$LogTime+".log" # Logparser query $VirDomains_str = "" $i = 1 foreach ($v in $VirDomains) {     if ($i -eq "1") {     $VirDomains_str = "field15 LIKE '%$($v)%' OR field16 LIKE '%$($v)%'"     } else {     $VirDomains_str += " OR field15 LIKE '%$($v)%' OR field16 LIKE '%$($v)%'"     }     $i++ } $DCs_str = "" $i = 1 foreach ($d in $Servers) {     if ($i -eq "1") {     $DCs_str = "\\$($d)\c$\Scripts\Logs\Queries.log"     } else {     $DCs_str += ",\\$($d)\c$\Scripts\Logs\Queries.log"     }     $i++ } $query = """SELECT * INTO $($LogFile) FROM $DCs_str WHERE $VirDomains_str""" $LogParserStr = "-i:TSV -iSeparator:space -nFields:16 -headerRow:OFF -nSkipLines:30 -o:csv " + $query $LP = Start-Process -FilePath $LogParser -ArgumentList $LogParserStr -Wait -Passthru -NoNewWindow Start-Sleep -s 15 $Result = import-csv $LogFile # Send alert     if ($Result) {         $vir_ip = $result | select field8 -Unique         $msg.Body = "$($vir_ip.field8)"         $att = new-object Net.Mail.Attachment($LogFile)         $msg.Attachments.Add($att)         $SMTPClient.Send($msg)     }

4. Schedule a task (eg every 1 hour), runas account must have read permission for DNS Debug files