[Meta] Linux Investigation Guides - Part 2

[Aegrah]

Summary

This is part 2 of the "add 10 new Linux IGs per sprint" resolution. I will be adding 10 new investigation guides with OSQuery extension this sprint.

The following tasks have been or are to be performed:

Tasks

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1. Creation of C2 Linux IGs
2. PR review of C2 Linux IGs/Merge
3. Creation of set 1 - Persistence Linux IGs
4. PR review/merge of set 1 - Persistence Linux IGs
5. Creation of set 2 - Persistence Linux IGs
6. PR review/merge of set 2 - Persistence Linux IGs
7. Present feedback on GenAI IG creation work

Additionally, while working on these IGs, @Mikaayenson 's generative AI IG creation work will be used. And feedback on these IGs will be added to https://github.com/elastic/elastic-genai-rulecraft/issues/5.

Feedback was presented in https://docs.google.com/document/d/1Xb6-XeMKEqecDgMTmstMks2Gsd12rkbVf0wvOwISXD8/edit

[Aegrah]

First PR with 4 new IGs for Linux Persistence related rules has been created: #3288. The next 6 will be added after PTO.

[Aegrah]

I will finish out the final IGs, this week. There has been slippage due to unexpected PTO.

[terrancedejesus]

@Aegrah - Any chance we can get a tasklist in here to track the great work you have done and are going to finish? Will help with tracking at a higher level and correlation from meta -> issues (if applicable) -> PRs.

[Aegrah]

The second PR was created: #3350. Now all that is left, are reviews.

[Aegrah]

As the only thing that is left are the reviews, this meta will be closed.