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chore(rules): Improve Potential Process Hollowing rule #386

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rabbitstack merged 1 commit into from
Nov 21, 2024
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chore(rules): Improve Potential Process Hollowing rule #386

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6 changes: 3 additions & 3 deletions rules/defense_evasion_potential_process_hollowing_injection.yml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
name: Potential Process Hollowing
id: 2a3fbae8-5e8c-4b71-b9da-56c3958c0d53
version: 1.0.0
version: 1.1.0
description: |
Adversaries may inject malicious code into suspended and hollowed processes in order to
evade process-based defenses. Process hollowing is a method of executing arbitrary code
Expand Down Expand Up @@ -30,8 +30,8 @@ condition: >
sequence
maxspan 2m
|spawn_process| by ps.child.uuid
|unmap_view_of_section and file.view.size > 10000 and file.view.protection != 'READONLY' and (length(file.name) = 0 or not ext(file.name) = '.dll')| by ps.uuid
|load_executable and pe.is_modified| by ps.uuid
|unmap_view_of_section and file.view.size > 20000 and file.view.protection != 'READONLY' and (length(file.name) = 0 or not ext(file.name) = '.dll')| by ps.uuid
|load_executable| by ps.uuid
action:
- name: kill

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