Merge remote-tracking branch 'origin/3/dev' into sigma-pipeline-dir

salt/soc/files/soc/sigma_pipelines/sigma_so_pipeline.yml

@@ -14,6 +14,16 @@ transformations:
         - process.args
         - related.ip
         - dns.resolved_ip
+    # Not every source maps .caseless; EQL/ES|QL already match case-insensitively.
+    - id: caseless_to_parent_fields
+      type: field_name_mapping
+      mapping:
+        process.executable.caseless: process.executable
+        process.name.caseless: process.name
+        process.parent.executable.caseless: process.parent.executable
+        process.parent.name.caseless: process.parent.name
+        target.process.executable.caseless: target.process.executable
+        target.process.name.caseless: target.process.name
     - id: baseline_field_name_mapping
       type: field_name_mapping
       mapping:

salt/soc/files/soc/sigma_playbook_pipeline.yaml

@@ -2,13 +2,13 @@ name: Security Onion - Playbook Pipeline
 priority: 97
 transformations:
     # Route to lowercase-normalized .caseless subfields for case-insensitive matching.
-    # file.path.caseless exists on Defend only (Sysmon file events lack it);
     # registry.path / dll.path / file.name have no .caseless on any source.
     - id: case_insensitive_string_fields
       type: field_name_mapping
       mapping:
         process.executable: process.executable.caseless
         process.parent.executable: process.parent.executable.caseless
+        process.parent.name: process.parent.name.caseless
         process.command_line: process.command_line.caseless
         process.parent.command_line: process.parent.command_line.caseless
         file.path: file.path.caseless