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Invalid ssh login (HPUX 11iv2)

Microsoft.ACS.HPUX.11iv2.Ssh.Invalid (Rule)

Rule to collect events for invalid ssh login

Knowledge Base article:

Summary

An invalid ssh request 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.HPUX.11iv2.ACSEndPoint
CategoryEventCollection
EnabledTrue
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.HPUX.11iv2.Ssh.Invalid" Enabled="true" Target="Microsoft.ACS.HPUX.11iv2.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/adm/syslog/syslog.log</LogFile>

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

      <!-- [INPUT] Nov  6 11:43:08 scxhpi10 sshd[26676]: error: PAM: No account present for user for illegal user kalle from scxhpr3.scx.com -->

      <!-- [INPUT] Nov  6 14:17:09 scxhpr3 sshd[21156]: error: PAM: No account present for user for illegal user kalle from scxhpi10.scx.com -->

      <!-- [EXPECTED] date="Nov  6 11:43:08"; hostname="scxhpi10"; process="sshd"; processId="26676"; user="kalle"; clientHost="scxhpr3.scx.com" -->

      <!-- [EXPECTED] date="Nov  6 14:17:09"; hostname="scxhpr3"; process="sshd"; processId="21156"; user="kalle"; clientHost="scxhpi10.scx.com" -->

      <RegExpFilter>sshd[[:space:]]*\[[[:digit:]]+\][[:space:]]*:[[:space:]]*error:[[:space:]]*PAM:[[:space:]]*No account present for user for illegal user[[:space:]]+[^[:space:]]+[[:space:]]+from[[:space:]]+[^[: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)\s*\[(?'processId'\d+)\]\s*:\s*error:\s*PAM:\s*No account present for user for illegal user\s+(?'user'\S+)\s+from\s+(?'clientHost'\S+)</RegExp>

      <EventType>0</EventType>

      <EventId>27003</EventId>

    </WriteAction>

  </WriteActions>

</Rule>