mandiant / mandiant/capa-rules

reconsider att&ck classification for get/set-uefi-variable.yml

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#944 3 comments 2 reactions 0 assignees View on GitHub

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att&ck false positive
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Description

We should reconsider the `att&ck` classification for https://github.com/mandiant/capa-rules/blob/64b174e50253cbd506df40e7728531b801636a56/host-interaction/bootloader/get-uefi-variable.yml#L11 and https://github.com/mandiant/capa-rules/blob/64b174e50253cbd506df40e7728531b801636a56/host-interaction/bootloader/set-uefi-variable.yml#L11.

Without additional indicators, I'm not sure that we can draw the conclusion that getting/setting UEFI variables results in boot persistence.

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Research direction

Start with the ATT&CK classification at line 11 of host-interaction/bootloader/get-uefi-variable.yml and set-uefi-variable.yml, then review the surrounding rule definitions. Determine whether getting or setting UEFI variables alone supports the boot-persistence conclusion; done means the classifications and any supporting rationale are consistent with that decision.

Written by the indexing model from the issue text.

Assessment

Domain
security
Issue type
Refactor
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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