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Invalid Console Login (AIX 7)

Microsoft.ACS.AIX.7.Console.Invalid (Rule)

Rule to collect events for invalid console login events

Knowledge Base article:

Summary

An invalid login attempt via the system console has been detected in the system log files.

Causes

A user attempted to (unsuccessfully) log in via the system console.

Resolutions

The description of the alert and/or the output data item contains information on the event encountered. If the activity appears suspicious, please check the associated event details and any other events that happened around the time of this event.

Element properties:

TargetMicrosoft.ACS.AIX.7.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.7.Console.Invalid" Enabled="false" Target="Microsoft.ACS.AIX.7.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 ConsoleLogin False -->

      <!-- [INPUT] Oct  5 13:22:23 scxomd-aix7-01 auth|security:info syslog: vty0: failed login attempt for UNKNOWN_USER -->

      <!-- [EXPECTED] date="Oct  5 13:22:23"; hostname="scxomd-aix7-01"; user="UNKNOWN_USER" -->

      <RegExpFilter>[[:space:]]+syslog: .*: failed login attempt for UNKNOWN_USER$</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+)\s+.*\s+syslog: (?!sshd).*: failed login attempt for (?'user'UNKNOWN_USER)$</RegExp>

      <EventType>0</EventType>

      <EventId>27003</EventId>

      <BackrefDefaults>process="login"</BackrefDefaults>

    </WriteAction>

  </WriteActions>

</Rule>