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linux_syscall_auditd_update#3467

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patel-bhavin merged 11 commits into
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linux_syscall_auditd_update
May 5, 2025
Merged

linux_syscall_auditd_update#3467
patel-bhavin merged 11 commits into
developfrom
linux_syscall_auditd_update

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@tccontre
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@tccontre tccontre commented Apr 16, 2025

Update Linux Auditd SYSCALL Detection due to updated TA fields

    modified:   detections/endpoint/linux_auditd_at_application_execution.yml
    modified:   detections/endpoint/linux_auditd_data_transfer_size_limits_via_split_syscall.yml
    modified:   detections/endpoint/linux_auditd_doas_tool_execution.yml
    modified:   detections/endpoint/linux_auditd_edit_cron_table_parameter.yml
    modified:   detections/endpoint/linux_auditd_insert_kernel_module_using_insmod_utility.yml
    modified:   detections/endpoint/linux_auditd_install_kernel_module_using_modprobe_utility.yml
    modified:   detections/endpoint/linux_auditd_kernel_module_enumeration.yml
    modified:   detections/endpoint/linux_auditd_kernel_module_using_rmmod_utility.yml
    modified:   detections/endpoint/linux_auditd_system_network_configuration_discovery.yml
    modified:   detections/endpoint/linux_auditd_whoami_user_discovery.yml

What does this PR have in it? Screenshots are worth 1000 words 😄

updated view of fields where the SYSCALL and other ID's like UID are in lower case now.

Screenshot 2025-04-16 at 10 08 26 Screenshot 2025-04-16 at 12 08 54

Checklist

  • Validate name matches <platform>_<mitre att&ck technique>_<short description> nomenclature
  • CI/CD jobs passed ✔️
  • Validated SPL logic.
  • Validated tags, description, and how to implement.
  • Verified references match analytic.
  • Confirm updates to lookups are handled properly.

Notes For Submitters and Reviewers

  • If you're submitting a PR from a fork, ensuring the box to allow updates from maintainers is checked will help speed up the process of getting it merged.
  • Checking the output of the build CI job when it fails will likely show an error about what is failing. You may have a very descriptive error of the specific field(s) in the specific file(s) that is causing an issue. In some cases, its also possible there is an issue with the YAML. Many of these can be caught with the pre-commit hooks if you set them up. These errors will be less descriptive as to what exactly is wrong, but will give you a column and row position in a specific file where the YAML processing breaks. If you're having trouble with this, feel free to add a comment to your PR tagging one of the maintainers and we'll be happy to help troubleshoot it.
  • Updates to existing lookup files can be tricky, because of how Splunk handles application updates and the differences between existing lookup files being updated vs new lookups. You can read more here but the short version is that any changes to lookup files need to bump the the date and version in the associated YAML file.

@tccontre tccontre added the WIP DO NOT MERGE Work in Progress label Apr 16, 2025
@tccontre tccontre removed the WIP DO NOT MERGE Work in Progress label Apr 16, 2025
@patel-bhavin
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Can we also add output_fields to the Linux data sources ?

@tccontre
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tccontre commented May 5, 2025

Can we also add output_fields to the Linux data sources ?

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@patel-bhavin patel-bhavin added this to the v5.5.0 milestone May 5, 2025
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LGTM!

@patel-bhavin patel-bhavin merged commit 402f870 into develop May 5, 2025
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@patel-bhavin patel-bhavin deleted the linux_syscall_auditd_update branch May 5, 2025 19:14
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3 participants