The Corelight App for Splunk enables incident responders and threat hunters who use Splunk® and Splunk Enterprise Security to work faster and more effectively.
| App Version | 2.4.9 |
| App Build | 124 |
| Splunk Enterprise Versions | 9.1, 9.0, 8.2, 8.1 |
| Platforms | Splunk Enterprise, Splunk Cloud |
| Splunkbase Url | https://splunkbase.splunk.com/app/3884 |
| Author | Aplura, LLC. and Corelight, Inc. |
| Creates an index | False |
| Implements summarization | No |
| Summary Indexing | False |
| Report Acceleration | False |
The App and Add-on extract information and knowledge from Zeek (formerly known as Bro) via Corelight Sensors or open-source Zeek, resulting in powerful security insights through key traffic dashboards such as:
Intel: Find IOCs from external sources matched in network traffic.
Notices: See situations flagged by the Notice policy for further investigation.
IP Interrogation: Identify anomalies by reviewing top protocol usage, internal vs. external connections, top connections by bytes transferred and more.
Log Hunting: Accelerate your hunt by narrowing down many logs to only the logs that matter.
Detections: Find and respond to off-port protocol usage, IOC matches, and other potentially interesting events.
Connections: Gain situational awareness using lists of top services, ports, dataflows, originators, and responders.
HTTP: Find suspicious HTTP transactions by reviewing a list of top host headers, originators, rare user agents and rare host headers.
DNS: Detect DNS exfiltration by spotting queries to non-existent domains and high connection counts.
Files: Find executables hidden in benign extensions and compressed files.
Corelight Egress Monitor: Find risky North/South user connections to weak SSL versions.
The Technical Add-On should be placed upon the servers that will get the forwarded data from the Corelight Sensor.
This step is OPTIONAL based on your environment. The full App contains the required configurations for full index-time parsing.
Questions should be asked at https://www.corelight.com/support
By default, all events will be written to the ``main`` index. Please see Corelight documentation on how to change the destination index from the appliance.
By default, all Corelight information is searched for using the corelight_idx event type. To change the location for the app to search for Corelight data, edit the corelight_idx event type to point to your Corelight index.
cid is a custom command provided to turn a tuple of src_ip, src_port, dest_ip, and dest_port into a community string.
Corelight App For Splunk contains several lookup files.
<div class="note"> It is a best practice and recommendation to **not** use the direct CSV name, as these will change between versions. Use the `transforms` name as listed in the table. </div>| Transforms | Filename | Description |
| port_descriptions | port_desc_2.4.9.csv | Gives port descriptions to ports. |
| corelight_systems | corelight_systems_2.4.9.csv | Auto-generated from sensor data |
| corelight_services | corelight_services_2.4.9.csv | Auto-generated from services data |
| corelight_dns_ports | corelight_dns_ports_2.4.9.csv | Auto-generated from DNS data |
| orelight_dns_record_types | corelight_dns_record_type_2.4.9.csv | Auto-generated from NDS data |
| corelight_files_mime_types | corelight_files_mime_types_2.4.9.csv | Auto-generated from files data |
| corelight_software_types | corelight_software_types_2.4.9.csv | Auto-generated from software data |
| corelight_dns_reply_code | corelight_dns_reply_code_2.4.9.csv | Provided to lookup reply code types |
| corelight_conn_state_description | corelight_conn_state_description_2.4.9.csv | Describes connection states |
| corelight_status_action | corelight_status_action_2.4.9.csv | Describes Corelight action and status |
| ssh_inference | ssh_inference_lookup_2.4.9.csv | Describes inferences |
| corelight_inferences_description | corelight_inferences_description_2.4.9.csv | Describes inferences |
| corelight_severity | corelight_severities_2.4.9.csv | Maps severity ids and severity text |
| corelight_error_messages | corelight_error_messages_2.4.9.csv | Contains information on Corelight Error messages. |
This App provides the following scripts:
cid.py
Script for use with the cid command.
Diag.py
Custom diag generation
Utilities.py
Splunk utilities for python scripts
version.py
The splunk app version for logging purposes
app_properties.py
The Splunk extension properties.
Corelight App For Splunk does not make use of an event generator.
Summary Indexing: No
Data Model Acceleration: No
Report Acceleration: No
Version 2.4.9 of Corelight App For Splunk has the following known issues:
Versions prior to 2.4.7 have the following known issues:
inferences{} field may have issues with search settings.Versions prior to 2.4.6 have the following known issues:
cid command, the transport was not correct for IPv6 src_ip fields.Largest Transfers Between Host Pairs Over VPNmsg or note fields.Corelight Suricata IDS Alerts dashboard.id.* fields.corelight_ntp sourcetype: correct an if statementKV_MODE on corelight_tsv as invalid against INDEXED_EXTRACTIONS= Version 2.4.6
cid search command relating to icmp6 with IPv6 src_ips.inferences props for better extractions.cid custom command to a v2 Search Command.splunklib to current version.As a Splunkbase app developer, you will have access to all Splunk development resources and receive a 10GB license to build an app that will help solve use cases for customers all over the world. Splunkbase has 1000+ apps from Splunk, our partners and our community. Find an app for most any data source and user need, or simply create your own with help from our developer portal.