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Logon ssh com Êxito (AIX 6.1)

Microsoft.ACS.AIX.6.1.Ssh.Succeeded (Rule)

Regra para coletar eventos relacionados a logons ssh com êxito

Knowledge Base article:

Resumo

Foi detectado um comando ssh nos arquivos de log do sistema.

Causas

Foi concedido ao usuário acesso ao sistema remotamente. Este monitor permite que os administradores de sistemas controlem o uso de 'ssh'.

Resoluções

A descrição do alerta e/ou do item de dados de saída contém informações sobre o evento encontrado. Se a atividade parecer suspeita, verifique os detalhes do evento relacionado e todos os outros eventos que ocorreram por volta do horário desse evento.

Element properties:

TargetMicrosoft.ACS.AIX.6.1.ACSEndPoint
CategoryEventCollection
EnabledFalse
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Unix.SCXLog.Privileged.Datasource Default
WA WriteAction Microsoft.ACS.Unix.SecureEventLogWriter Default

Source Code:

<Rule ID="Microsoft.ACS.AIX.6.1.Ssh.Succeeded" Enabled="false" Target="Microsoft.ACS.AIX.6.1.ACSEndPoint" Remotable="true">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="EventDS" TypeID="Unix!Microsoft.Unix.SCXLog.Privileged.Datasource">

      <Host>$Target/Host/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$</Host>

      <LogFile>/var/log/syslog.log</LogFile>

      <!-- [TYPE] AIX SSH True -->

      <!-- [INPUT] Oct 30 14:10:48 scxaix1 auth|security:info sshd[344146]: Accepted publickey for ccrammo from 172.30.182.212 port 40871 ssh2 -->

      <!-- [EXPECTED] date="Oct 30 14:10:48"; hostname="scxaix1"; process="sshd"; processId="344146"; user="ccrammo"; clientHost="172.30.182.212" -->

      <!-- [INPUT] Oct 30 14:11:34 scxaix1 auth|security:info sshd[376912]: Accepted password for root from 172.30.182.212 port 40873 ssh2 -->

      <!-- [EXPECTED] date="Oct 30 14:11:34"; hostname="scxaix1"; process="sshd"; processId="376912"; user="root"; clientHost="172.30.182.212" -->

      <!-- [INPUT] Nov  6 12:39:23 scxaix1 auth|security:info sshd[524538]: Accepted hostbased for root from 10.195.175.32 port 37129 ssh2 -->

      <!-- [EXPECTED] date="Nov  6 12:39:23"; hostname="scxaix1"; process="sshd"; processId="524538"; user="root"; clientHost="10.195.175.32" -->

      <RegExpFilter>sshd\[[[:digit:]]+\]:[[:space:]]*Accepted .+ for [^[:space:]]+ from [^[:space:]]+</RegExpFilter>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="ACS.Unix!Microsoft.ACS.Unix.SecureEventLogWriter">

      <RegExp>(?'date'\S+\s+\d+\s+\d+:\d+:\d+)\s+(?:\S+:)?(?'hostname'\S+).+ (?'process'sshd)\[(?'processId'\d+)\]:\s*Accepted .+ for (?'user'\S+)+ from (?'clientHost'\S+)</RegExp>

      <EventType>1</EventType>

      <EventId>27002</EventId>

    </WriteAction>

  </WriteActions>

</Rule>