Merge pull request #81 from wazuh/PR-62_add_local_rules

adding custom rules/decoders files

roles/wazuh/ansible-wazuh-manager/custom_ruleset/decoders/sample_custom_decoders.xml

@@ -0,0 +1,25 @@
+<!-- Local Decoders -->
+
+<!-- Modify it at your will. -->
+
+<!--
+ - Allowed static fields:
+ - location - where the log came from (only on FTS)
+ - srcuser - extracts the source username
+ - dstuser - extracts the destination (target) username
+ - user - an alias to dstuser (only one of the two can be used)
+ - srcip - source ip
+ - dstip - dst ip
+ - srcport - source port
+ - dstport - destination port
+ - protocol - protocol
+ - id - event id
+ - url - url of the event
+ - action - event action (deny, drop, accept, etc)
+ - status - event status (success, failure, etc)
+ - extra_data - Any extra data
+-->
+
+<decoder name="sample_custom_decoder">
+ <program_name>sample_custom_decoder</program_name>
+</decoder>

roles/wazuh/ansible-wazuh-manager/custom_ruleset/rules/sample_custom_rules.xml

@@ -0,0 +1,18 @@
+<!-- Local rules -->
+
+<!-- Modify it at your will. -->
+
+<!-- Example -->
+<group name="local,syslog,sshd,">
+
+ <!--
+ Dec 10 01:02:02 host sshd[1234]: Failed none for root from 1.1.1.1 port 1066 ssh2
+ -->
+ <rule id="200001" level="5">
+ <if_sid>5716</if_sid>
+ <srcip>1.1.1.1</srcip>
+ <description>sshd: authentication failed from IP 1.1.1.1.</description>
+ <group>authentication_failed,pci_dss_10.2.4,pci_dss_10.2.5,</group>
+ </rule>
+
+</group>

roles/wazuh/ansible-wazuh-manager/defaults/main.yml

@@ -183,6 +183,9 @@ wazuh_manager_config:
  executable: 'route-null.cmd'
  expect: 'srcip'
  timeout_allowed: 'yes'
+ ruleset:
+ rules_path: '/etc/ansible/roles/wazuh-ansible/roles/wazuh/ansible-wazuh-manager/custom_ruleset/rules/'
+ decoders_path: '/etc/ansible/roles/wazuh-ansible/roles/wazuh/ansible-wazuh-manager/custom_ruleset/decoders/'
  rule_exclude:
  - '0215-policy_rules.xml'
  active_responses:

roles/wazuh/ansible-wazuh-manager/tasks/main.yml

@@ -96,6 +96,18 @@
  - config
  - rules
 
+- name: Adding local rules files
+ copy: src="{{ wazuh_manager_config.ruleset.rules_path }}"
+ dest=/var/ossec/etc/rules/
+ owner=root
+ group=ossec
+ mode=0640
+ notify: restart wazuh-manager
+ tags:
+ - init
+ - config
+ - rules
+
 - name: Installing the local_decoder.xml
  template: src=var-ossec-rules-local_decoder.xml.j2
  dest=/var/ossec/etc/decoders/local_decoder.xml
@@ -108,6 +120,18 @@
  - config
  - rules
 
+- name: Adding local decoders files
+ copy: src="{{ wazuh_manager_config.ruleset.decoders_path }}"
+ dest=/var/ossec/etc/decoders/
+ owner=root
+ group=ossec
+ mode=0640
+ notify: restart wazuh-manager
+ tags:
+ - init
+ - config
+ - rules
+
 - name: Configure the shared-agent.conf
  template:
  src: var-ossec-etc-shared-agent.conf.j2