Rule to collect events for successful ssh login
An ssh command has been detected in the system log files.
User was granted access to the system remotely. This monitor allows system administrators to track 'ssh' usage.
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.
Target | Microsoft.ACS.Linux.RHEL.6.ACSEndPoint |
Category | EventCollection |
Enabled | True |
Alert Generate | False |
Remotable | True |
ID | Module Type | TypeId | RunAs |
---|---|---|---|
EventDS | DataSource | Microsoft.Unix.SCXLog.Privileged.Datasource | Default |
WA | WriteAction | Microsoft.ACS.Unix.SecureEventLogWriter | Default |
<Rule ID="Microsoft.ACS.Linux.RHEL.6.Ssh.Succeeded" Enabled="true" Target="Microsoft.ACS.Linux.RHEL.6.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/secure</LogFile>
<!-- [TYPE] Redhat6 SSH True -->
<!-- [INPUT] Oct 5 07:25:33 scxcrd-rhel6-01 sshd[20748]: Accepted password for scxuser from 172.30.170.215 port 55122 ssh2 -->
<!-- [INPUT] Oct 5 07:26:14 scxcrd-rhel6-01 sshd[20773]: Accepted password for root from 172.30.170.215 port 55123 ssh2 -->
<!-- [INPUT] Oct 5 07:24:43 scxcrd-rhel6-01 sshd[20713]: Accepted publickey for jeffcof from 172.30.170.215 port 55121 ssh2 -->
<!-- [EXPECTED] date="Oct 5 07:25:33"; hostname="scxcrd-rhel6-01"; process="sshd"; processId="20748"; user="scxuser"; clientHost="172.30.170.215" -->
<!-- [EXPECTED] date="Oct 5 07:26:14"; hostname="scxcrd-rhel6-01"; process="sshd"; processId="20773"; user="root"; clientHost="172.30.170.215" -->
<!-- [EXPECTED] date="Oct 5 07:24:43"; hostname="scxcrd-rhel6-01"; process="sshd"; processId="20713"; user="jeffcof"; clientHost="172.30.170.215" -->
<RegExpFilter>\s+sshd\[[[:digit:]]+\]: Accepted \S+ for \S+ from \S+</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)\[(?'processId'\d+)\]: Accepted \S+ for (?'user'\S+) from (?'clientHost'\S+)</RegExp>
<EventType>1</EventType>
<EventId>27002</EventId>
</WriteAction>
</WriteActions>
</Rule>