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Failed ssh login (Solaris 10)

Microsoft.ACS.Solaris.10.Ssh.Failed (Rule)

Rule to collect events for failed ssh login

Knowledge Base article:

Summary

An unsuccessful ssh command has been detected in the system log files.

Causes

User was not granted access to the system remotely. This monitor allows system administrators to track 'ssh' usage.

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.Solaris.10.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.Solaris.10.Ssh.Failed" Enabled="false" Target="Microsoft.ACS.Solaris.10.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/authlog</LogFile>

      <!-- [TYPE] Solaris SSH False -->

      <!-- [INPUT] Nov  5 17:24:28 scxsun12 sshd[4358]: [ID 800047 auth.notice] Failed keyboard-interactive for jeffcof from 10.195.173.73 port 55229 ssh2 -->

      <!-- [INPUT] Nov  6 13:51:55 scxsun12 sshd[22123]: [ID 800047 auth.notice] Failed keyboard-interactive for root from 10.195.173.73 port 39057 ssh2 -->

      <!-- [EXPECTED] date="Nov  5 17:24:28"; hostname="scxsun12"; process="sshd"; processId="4358"; user="jeffcof"; clientHost="10.195.173.73" -->

      <!-- [EXPECTED] date="Nov  6 13:51:55"; hostname="scxsun12"; process="sshd"; processId="22123"; user="root"; clientHost="10.195.173.73" -->

      <RegExpFilter>sshd\[[[:digit:]]+\]: \[.*\] Failed (keyboard-interactive|publickey) 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+)\s+(?'process'sshd)\[(?'processId'\d+)\]: \[.*\] Failed (?:keyboard-interactive|publickey) for (?'user'\S+) from (?'clientHost'\S+)</RegExp>

      <EventType>0</EventType>

      <EventId>27003</EventId>

    </WriteAction>

  </WriteActions>

</Rule>