Add Thread Pool injection techniques

[Still34]

Summary

This PR adds a series of injection techniques mentioned in "The Pool Party You Will Never Forget: New Process Injection Techniques Using Windows Thread Pools" in BlackHat EU 2023; this closes #1008.

The proposed rules may or may not match false positives, and there currently aren't any known in-the-wild samples that use this injection technique; therefore, the proposed rules currently are better fit for the nursery category. The referenced sample is a copy of the locally-compiled version of PoolParty referenced in the original research.

[mike-hunhoff]

Nice work @Still34 ! I've left a comment for your review, and, please add a description field to the meta section of each rule containing a high-level summary of the corresponding technique.

[mike-hunhoff]

@Still34 we're failing lints here, see:

    (nursery)  inject shellcode using thread pool work insertion with TP_IO
      WARN: filename doesn't match the rule name: Rename rule file to match the 
rule name, expected: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp_io.yml", found: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp-io.yml"
      WARN: referenced example doesn't exist: Add the referenced example to 
samples directory ($capa-root/tests/data or supplied via --samples)


    (nursery)  inject shellcode using thread pool work insertion with TP_TIMER
      WARN: filename doesn't match the rule name: Rename rule file to match the 
rule name, expected: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp_timer.yml", found: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp-timer.yml"
      WARN: referenced example doesn't exist: Add the referenced example to 
samples directory ($capa-root/tests/data or supplied via --samples)


    (nursery)  inject shellcode using thread pool work insertion with TP_WORK
      WARN: filename doesn't match the rule name: Rename rule file to match the 
rule name, expected: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp_work.yml", found: 
"inject-shellcode-using-thread-pool-work-insertion-with-tp-work.yml"
      WARN: referenced example doesn't exist: Add the referenced example to 
samples directory ($capa-root/tests/data or supplied via --samples)

You can also run our lints locally to double check before your next commit.

Also, if you create a PR at https://github.com/mandiant/capa-testfiles for e999b36d5f9783178f0a4efa35a25d158f8d94325c3d6794f4153235c0aee60b we can move these rules out of the nursery before merging.

[Still34]

I've updated the rules accordingly - please take a look 🫰

[Still34]

Yeah, that's fair 👍 - removed

[mike-hunhoff]

LGTM 🚀