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Downloading Corvil Add-on for Splunk Enterprise Security
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Corvil Add-on for Splunk Enterprise Security

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This app is NOT supported by Splunk. Please read about what that means for you here.
Overview
Details
Corvil Security Analytics enables Security Ops teams to achieve more effective detection, investigation and response for network-based security threats, by leveraging Corvil's powerful network traffic analysis, anomaly detect and forensics capabilities.

This Corvil Add-on for Splunk Enterprise Security includes the following features:

1) Automatic CIM mapping for Corvil Security Analytics stream events, so they are searchable and can be correlated based on normalized Splunk CIM tags and fields, within Splunk Enterprise Security.

2) Adaptive Response action: "Track as Suspicious Host" - which enables a user within Splunk Enterprise Security to initiate and access full packet capture for the host involved in the notable event from which the adaptive response action was invoked.

Important note - The "Corvil Connector for Splunk" must be installed, configured and operational before using this add-on.

Pre-requisites

Version 1.0.4 of the Corvil Security Analytics App for Splunk is compatible with:
Splunk Enterprise versions: 7.2, 7.1, 7.0, 6.6, 6.5
Splunk Enterprise Security versions: 5.2, 5.1, 5.0
CIM Versions: 4.12, 4.11, 4.10, 4.9, 4.8
Platforms: Platform independent
* Vendor Products: Corvil Tera 9.4.1 or later, Corvil Security Analytics Module 1.2 and Enterprise Decoder Pack 1811 or later

Further guidance on the Adaptive Response Action:

When invoked, the action will connect to a specified Corvil Appliance and check if a dedicated monitoring session already exists for the Src IP which is referenced in the Notable Event that was clicked to launch the Adaptive Response action. If a session already exists, a URL is provided to the user in the Adaptive Response logs. If a session does not exist, the action will create a session and then provide the user with a URL in the Adaptive Response logs.

Known Issues

  • When using this add-on, the following error message may be displayed intermittently within Splunk:
    "msg="A script exited abnormally" input=""/home/user/Splunk Code/splunk/etc/apps/Corvil/bin/corvil"
    (corvil://secutiy_!)" stanza="default" status="exited with code 1"
    Workaround:
    Select Settings > Data Inputs > Configuration Checker
    Edit confcheck_script_errors
    Add 'corvil' to the Suppress regular expression.
    Save the updated configuration.

Release Notes

Version 1.0.4
Dec. 21, 2018

This release includes the following updates:
- Compatibility with Corvil CNE version 9.4 and Corvil Security Analytics Module version 1.2.
- Updated mapping of Corvil events to the Splunk Common Information Model
- Bug fixes

Version 1.0.3
March 23, 2018

This version resolved an issue which could cause this add-on to not function correctly when the connection from the Corvil Connector to the Corvil appliance(s) is encrypted (HTTPS).

Version 1.0.2
March 3, 2018
Version 1.0.1
Sept. 23, 2017

Improved logic to handle Corvil session creation.

Version 1.0.0
Sept. 12, 2017

Initial release.


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