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Fix winlogbeat powershell event processing. #18966

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merged 2 commits into from
Jun 5, 2020

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marc-gr
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@marc-gr marc-gr commented Jun 4, 2020

What does this PR do?

Adds a function to dynamically calculate the number of chunks the dissect needs to parse for Powershell events.

It also improves the provided dashboard to show more information on the detail area.

Why is it important?

Powershell events carry a fixed amount of parameters. Seems to be that for downgraded events the number of parameters varies, so dissect failed for those.

Checklist

  • My code follows the style guidelines of this project
  • I have commented my code, particularly in hard-to-understand areas
    I have made corresponding changes to the documentation
    I have made corresponding change to the default configuration files
  • I have added tests that prove my fix is effective or that my feature works
  • I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Screenshots

The updated dashboard

kibana-powershell

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Pinging @elastic/siem (Team:SIEM)

@botelastic botelastic bot added needs_team Indicates that the issue/PR needs a Team:* label and removed needs_team Indicates that the issue/PR needs a Team:* label labels Jun 4, 2020
@marc-gr marc-gr force-pushed the fix_winlogbeat_powershell-downgrade branch from 98a056e to a151a0b Compare June 4, 2020 10:34
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elasticmachine commented Jun 4, 2020

💚 Build Succeeded

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Build stats

  • Build Cause: [Pull request #18966 updated]

  • Start Time: 2020-06-04T15:23:08.973+0000

  • Duration: 45 min 52 sec

Test stats 🧪

Test Results
Failed 0
Passed 780
Skipped 128
Total 908

marc-gr added 2 commits June 4, 2020 17:21
Fix event processing for different engine versions.
Improve powershell dashboard
@marc-gr marc-gr force-pushed the fix_winlogbeat_powershell-downgrade branch from a151a0b to a953747 Compare June 4, 2020 15:22
@marc-gr marc-gr requested a review from leehinman June 4, 2020 15:26
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LGTM

@marc-gr marc-gr merged commit d5fee98 into elastic:master Jun 5, 2020
@marc-gr marc-gr deleted the fix_winlogbeat_powershell-downgrade branch June 5, 2020 06:44
marc-gr added a commit to marc-gr/beats that referenced this pull request Jun 5, 2020
Fix winlogbeat powershell event processing.
- Fix event processing for different engine versions.
- Improve powershell dashboard

(cherry picked from commit d5fee98)
marc-gr added a commit that referenced this pull request Jun 5, 2020
Fix winlogbeat powershell event processing.
- Fix event processing for different engine versions.
- Improve powershell dashboard

(cherry picked from commit d5fee98)
melchiormoulin pushed a commit to melchiormoulin/beats that referenced this pull request Oct 14, 2020
Fix winlogbeat powershell event processing.
- Fix event processing for different engine versions.
- Improve powershell dashboard
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3 participants