Thanks to Brad Duncan for sharing these pcaps!
https://www.malware-traffic-analysis.net/2021/06/04/index.html
We did a quick analysis of these pcaps on the latest version of Security Onion via so-import-pcap:
https://docs.securityonion.net/en/2.3/so-import-pcap.html
Here are some of the interesting Suricata alerts, Zeek logs, and session transcripts:
Thanks to Brad Duncan for sharing this pcap!
https://www.malware-traffic-analysis.net/2021/06/15/index.html
We did a quick analysis of the pcap on the latest version of Security Onion via so-import-pcap:
https://docs.securityonion.net/en/2.3/so-import-pcap.html
Here are some of the interesting Suricata alerts, Zeek logs, and session transcripts:
We recently released Security Onion 2.3.60, 2.3.61, and a few hotfixes:
https://blog.securityonion.net/2021/07/security-onion-2360-now-available.html
https://blog.securityonion.net/2021/07/security-onion-2360-heavy-node-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2360-filebeat-pipeline.html
https://blog.securityonion.net/2021/07/security-onion-2360-curator-auth-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2361-now-available.html
https://blog.securityonion.net/2021/07/security-onion-2361-hotfix-for-steno.html
Today, we are releasing a hotfix for Security Onion 2.3.61 with an additional fix:
https://github.com/Security-Onion-Solutions/securityonion/issues/4971
https://docs.securityonion.net/en/2.3/release-notes.html#hotfix-steno
This hotfix is only necessary for folks doing a MasterSearch installation with Elastic clustering enabled.
If you haven't updated recently, then you should review all blog posts linked above so that you are aware of all recent changes.
Internet-Connected Deployments
If your Security Onion deployment has Internet access, simply run "sudo soup" as described here:
https://docs.securityonion.net/en/2.3/soup.html
Airgap Deployments
If you have an airgap deployment, download the new ISO image from the usual location:
https://securityonion.net/download
Then follow the steps here:
https://docs.securityonion.net/en/2.3/airgap.html#security-onion-version-updates
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
Thanks to Brad Duncan for sharing these pcaps!
https://www.malware-traffic-analysis.net/2021/06/16/index.html
We did a quick analysis of the pcaps on the latest version of Security Onion via so-import-pcap:
https://docs.securityonion.net/en/2.3/so-import-pcap.html
Here are some of the interesting Suricata alerts, Zeek logs, and HTTP transcripts:
We recently released Security Onion 2.3.60, 2.3.61, and a few hotfixes in between:
https://blog.securityonion.net/2021/07/security-onion-2360-now-available.html
https://blog.securityonion.net/2021/07/security-onion-2360-heavy-node-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2360-filebeat-pipeline.html
https://blog.securityonion.net/2021/07/security-onion-2360-curator-auth-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2361-now-available.html
Today, we are releasing a hotfix for Security Onion 2.3.61 with some additional fixes:
https://docs.securityonion.net/en/2.3/release-notes.html#hotfix-steno
If you haven't updated recently, then you should review the blog posts linked above so that you are aware of all recent changes.
Internet-Connected Deployments
If your Security Onion deployment has Internet access, simply run "sudo soup" as described here:
https://docs.securityonion.net/en/2.3/soup.html
Airgap Deployments
If you have an airgap deployment, download the new ISO image from the usual location:
https://securityonion.net/download
Then follow the steps here:
https://docs.securityonion.net/en/2.3/airgap.html#security-onion-version-updates
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
Thanks to Brad Duncan for sharing this pcap!
https://www.malware-traffic-analysis.net/2021/06/17/index.html
We did a quick analysis of the pcap on the latest version of Security Onion via so-import-pcap:
https://docs.securityonion.net/en/2.3/so-import-pcap.html
Here are some of the interesting Suricata alerts, Zeek logs, and HTTP transcripts:
Thanks to Brad Duncan for sharing this pcap!
https://www.malware-traffic-analysis.net/2021/06/18/index.html
We did a quick analysis of the pcap on the latest version of Security Onion via so-import-pcap:
https://docs.securityonion.net/en/2.3/so-import-pcap.html
Here are some of the Suricata alerts, Zeek logs, and HTTP transcripts:
 |
| Suricata alerts |
 |
| Overview of all logs |
 |
| DNS lookups |
 |
| HTTP transactions grouped by port |
 |
| HTTP Virtual Hosts |
 |
| Windows EXE download via HTTP |
 |
| SSL/TLS certificates |
 |
| Windows EXE download |
We recently released Security Onion 2.3.60:
https://blog.securityonion.net/2021/07/security-onion-2360-now-available.html
and a few hotfixes:
https://blog.securityonion.net/2021/07/security-onion-2360-heavy-node-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2360-filebeat-pipeline.html
https://blog.securityonion.net/2021/07/security-onion-2360-curator-auth-hotfix.html
Today, we are releasing Security Onion 2.3.61 with some additional fixes and upgrades:
https://docs.securityonion.net/en/2.3/release-notes.html#changes
This includes Elastic 7.13.4 which resolves a security issue in previous Elastic releases:
https://www.elastic.co/guide/en/elasticsearch/reference/7.13/release-notes-7.13.4.html
If you haven't updated recently, then you should review the blog posts linked above so that you are aware of all recent changes.
Internet-Connected Deployments
If your Security Onion deployment has Internet access, simply run "sudo soup" as described here:
https://docs.securityonion.net/en/2.3/soup.html
Airgap Deployments
If you have an airgap deployment, download the new ISO image from the usual location:
https://securityonion.net/download
Then follow the steps here:
https://docs.securityonion.net/en/2.3/airgap.html#security-onion-version-updates
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
https://securityonion.net/discuss
We recently released Security Onion 2.3.60:
https://blog.securityonion.net/2021/07/security-onion-2360-now-available.html
and a few hotfixes:
https://blog.securityonion.net/2021/07/security-onion-2360-heavy-node-hotfix.html
https://blog.securityonion.net/2021/07/security-onion-2360-filebeat-pipeline.html
Today, we are releasing a Curator auth hotfix to resolve the issue described in the following discussion:
https://github.com/Security-Onion-Solutions/securityonion/discussions/4752
This hotfix is especially important if you are using Elastic authentication. If you have a new 2.3.60 installation, then Elastic authentication was enabled by default and you should install this hotfix. If you had an older installation that you updated to 2.3.60 and then manually enabled Elastic authentication using so-elastic-auth, then you should install this hotfix.
If you haven't updated recently, then you should review the blog posts linked above so that you are aware of all recent changes.
After updating, you can check the curator log at /opt/so/log/curator/curator.log to make sure that Curator is operating correctly.
Internet-Connected Deployments
If your Security Onion deployment has Internet access, simply run "sudo soup" as described here:
https://docs.securityonion.net/en/2.3/soup.html
Airgap Deployments
If you have an airgap deployment, download the new 2.3.60-CURATORAUTH ISO image from the usual location:
https://securityonion.net/download
Then follow the steps here:
https://docs.securityonion.net/en/2.3/airgap.html#security-onion-version-updates
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
https://securityonion.net/discuss
We recently released Security Onion 2.3.60:
https://blog.securityonion.net/2021/07/security-onion-2360-now-available.html
and a heavy node pipeline hotfix:
https://blog.securityonion.net/2021/07/security-onion-2360-heavy-node-hotfix.html
Today, we are releasing a Filebeat pipeline hotfix to resolve the issue described in the following discussion:
https://github.com/Security-Onion-Solutions/securityonion/discussions/4777
If you haven't updated recently, then you should review the blog posts linked above so that you are aware of all recent changes.
Internet-Connected Deployments
If your Security Onion deployment has Internet access, simply run "sudo soup" as described here:
https://docs.securityonion.net/en/2.3/soup.html
Airgap Deployments
If you have an airgap deployment, download the new 2.3.60-FBPIPELINE ISO image from the usual location:
https://securityonion.net/download
Then follow the steps here:
https://docs.securityonion.net/en/2.3/airgap.html#security-onion-version-updates
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
https://securityonion.net/discuss
Thanks to Richard Bejtlich for writing the inspiring foreword!
Proceeds go to the Rural Technology Fund!
This 20210706 edition has been updated for Security Onion 2.3.60 and includes a 40% discount code for our on-demand training!
This book covers the following Security Onion topics:
Q&A
What is the difference between this book and the online documentation?
This book is the online documentation formatted specifically for print. It also includes an inspiring foreword by Richard Bejtlich that is not available anywhere else! Proceeds go to the Rural Technology Fund! Finally, the printed book includes a 40% discount code for our on-demand training.
Who should get this book?
You should get this book if you work on airgap networks or simply want a portable reference that doesn't require an Internet connection or batteries! Also anyone who wants to donate to a worthy cause like Rural Technology Fund!
What is the difference between this edition and the previous edition?
This edition has been updated for Security Onion 2.3.60!
Where do we get it?
If you don't have any heavy nodes in your deployment, then you can ignore this blog post and hotfix. If you do have heavy nodes, please continue reading.
We were recently notified by Github user Sahale that heavy nodes are incorrectly sending logs to the manager:
https://github.com/Security-Onion-Solutions/securityonion/discussions/4697
We've put together a hotfix to correct heavy node pipelines. If you have any heavy nodes in your deployment, you will want to install this hotfix via the normal soup process. (If you weren't already on version 2.3.60, then soup will upgrade to 2.3.60 and install the hotfix.) If you're in an airgap environment, please see https://docs.securityonion.net/en/2.3/airgap.html#security-onion-hotfixes.
Once your deployment is fully updated, you should then do the following on each heavy node.
Restart services:
sudo salt-call state.apply ssl queue=True
sudo so-redis-restartsudo so-elasticsearch-stop
sudo so-filebeat-restart #(this may take a few minutes as module pipelines are loaded)
sudo so-logstash-restart
Check to ensure the Redis input and output now reflect Logstash pushing to and pulling from Redis on the heavy node (check for heavy node host name):
sudo grep host /opt/so/conf/logstash/pipelines/manager/9999_output_redis.conf
sudo grep host /opt/so/conf/logstash/pipelines/search/0900_input_redis.conf
Ensure certificates for Redis and Elasticsearch reflect the correct `CN` value (heavy node host name):
sudo openssl x509 -in /etc/pki/elasticsearch.crt -text -noout | grep -E 'Subject.*CN'
sudo openssl x509 -in /etc/pki/redis.crt -text -noout | grep -E 'Subject.*CN'
Ensure no issues with Logstash connecting to Redis. Check /opt/so/log/logstash/logstash.log for SSL/TLS/Bad certificate errors, or errors with regard to missing pipelines. For example:
sudo tail -f /opt/so/log/logstash/logstash.log
Ensure Filebeat module pipelines are loaded:
sudo so-elasticsearch-pipelines-list | grep filebeat
Ensure data is flowing through the manager and search pipeline input/output for Redis (should see non-zero/count increasing):
sudo so-logstash-pipeline-stats manager | grep -C5 redis
sudo so-logstash-pipeline-stats search | grep -C5 redis
Ensure data is being written to local Elasticsearch indices (should see so-zeek, so-suricata, so-ossec indices, etc):
sudo so-elasticsearch-query _cat/indices
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
https://securityonion.net/discuss
Last October, we released Security Onion 2.3:
https://blog.securityonion.net/2020/10/security-onion-2-has-reached-general.html
Today, we are releasing Security Onion 2.3.60, which adds new features and resolves a few issues:
https://docs.securityonion.net/en/2.3/release-notes.html#changes
UPDATE 2021/07/02 10:11 AM - We've identified a few issues in this release and are working on releasing a hotfix. If you haven't already updated to 2.3.60, you may want to wait until we release the hotfix.
UPDATE 2021/07/02 11:34 AM - We've released the hotfix as 2.3.60-ECSFIX. If you had already updated to 2.3.60 via soup, you will want to run soup again to get 2.3.60-ECSFIX. If you had downloaded the 2.3.60 ISO image, you will want to download the new 2.3.60-ECSFIX ISO image.
Elastic
Starting in Security Onion 2.3.60, we will support Elastic authentication. This means that you will authenticate to Elasticsearch and Kibana using the same username and password that you use for Security Onion Console (SOC). Please make sure you read and understand the following:
https://docs.securityonion.net/en/2.3/so-elastic-auth.html
https://docs.securityonion.net/en/2.3/so-elasticsearch-query.html
Filebeat
We now support official Filebeat modules:
https://docs.securityonion.net/en/2.3/filebeat.html#modules
Security Onion Console (SOC)
SOC has many improvements in this release:
Grafana
In this release, Grafana will have both high-resolution data and downsampled low-resolution data. Some Grafana graphs have dotted lines (trend lines) that show previous data that has been downsampled. High-resolution data will be purged after 30 days, leaving just the downsampled low-resolution data.
When upgrading an existing installation to Security Onion 2.3.60, Grafana will not show old data by default. You can update the data as shown here:
https://docs.securityonion.net/en/2.3/grafana.html#grafana-changes-in-security-onion-2-3-60
YouTube
We covered some of these highlights in a YouTube video:
https://youtu.be/x9rfxTqZpZQ
Documentation
You can find our documentation here:
https://docs.securityonion.net/en/2.3/
Documentation is always a work in progress and some documentation may be missing or incorrect. Please let us know if you notice any issues.
New Installations
If you want to perform a new installation, please review the 2.3 documentation and then you can find instructions here:
https://docs.securityonion.net/en/2.3/download.html
Existing 2.3 Installations
If you have an existing Security Onion 2.3 installation, please see:
https://docs.securityonion.net/en/2.3/soup.html
AWS Marketplace
For new Security Onion 2 installations, version 2.3.60 will soon be available on AWS Marketplace via the official Security Onion 2 AMI:
https://securityonion.net/aws/?ref=_ptnr_soc_blog_210701
AMI Documentation:
https://securityonion.net/docs/cloud-ami
Existing Security Onion 2 AMI users should use the "soup" command to upgrade:
https://docs.securityonion.net/en/2.3/soup.html
Security Onion 16.04 EOL
As a reminder, Security Onion 16.04 has reached End Of Life (EOL):
https://blog.securityonion.net/2021/04/security-onion-1604-has-reached-end-of.html
If you're still running Security Onion 16.04, please see the following for upgrade options:
https://docs.securityonion.net/en/2.3/appendix.html
Questions or Problems
If you have questions or problems, please see our community support forum guidelines:
https://docs.securityonion.net/en/2.3/community-support.html
You can then find the community support forum at:
https://securityonion.net/discuss
Thanks
Lots of love went into this release!
Special thanks to all our folks working so hard to make this release happen!
Training
Need training? Start with our free Security Onion Essentials training and then take a look at some of our other official Security Onion training, including our new Detection Playbook class!
https://securityonion.net/training
Hardware Appliances
We know Security Onion's hardware needs, and our appliances are the perfect match for the platform. Leave the hardware research, testing, and support to us, so you can focus on what's important for your organization. Not only will you have confidence that your Security Onion deployment is running on the best-suited hardware, you will also be supporting future development and maintenance of the Security Onion project!
https://securityonionsolutions.com/hardware
Screenshot Tour
If you want the quickest and easiest way to try out Security Onion 2, just follow the screenshots below to install an Import node and then optionally enable the Analyst Workstation. This can be done in a minimal VM with only 4GB RAM!
 |
| Security Onion ISO Boot Menu |
 |
| ISO Installation |
 |
| ISO Installation Complete |
 |
| After rebooting, login to start Setup |
 |
| Setup Options |
 |
| Choose the Setup type |
 |
| Accept the Elastic License |
 |
| Choose Standard or Airgap |
 |
| Specify hostname |
 |
| Setup checks for the common hostname of "securityonion" |
 |
| Select management NIC |
 |
| Configure management NIC |
 |
| Configure networking |
 |
| Configure networking |
 |
| Configure networking |
 |
| Configure networking |
 |
| Initialize networking |
 |
| Select direct connection to Internet or specify proxy |
 |
| Select direct connection to Internet or specify proxy |
 |
| Create user account |
 |
| Set password |
 |
| Confirm password |
 |
| Choose how you want to access the web interface |
 |
| Optionally configure ntp servers |
 |
| Optionally configure ntp servers |
 |
| Optionally run so-allow |
 |
| Specify IP address or range to allow through firewall |
 |
| Confirm options |
 |
| Setup complete |
 |
| After rebooting and logging in, optionally run so-analyst-install |
 |
| so-analyst-install complete |
 |
| Enter username to login to desktop |
 |
| Enter password to login to desktop |
 |
| Analyst desktop |
 |
| Analyst install includes Chromium, NetworkMiner, Wireshark, and many other analysis tools |
 |
| Log into Security Onion Console (SOC) |
 |
| SOC Overview Page |
 |
| Use so-import-pcap to import one or more pcap files |
 |
| Use the hyperlink provided by so-import-pcap to view all alerts and logs |
 |
| Find an interesting stream and pivot to full packet capture |
 |
| Switch to PCAP transcript mode |
 |
| Download the PCAP and open directly in NetworkMiner for file extraction |
 |
| All this in a minimal VM with only 4GB RAM! |