Missing subtechnique-of relationships for T1053.001 and T1547.011

Summary

Two subtechniques in enterprise-attack-18.1.json are missing their subtechnique-of relationship objects, making it impossible to programmatically determine their parent techniques using only relationship lookups.

Affected Subtechniques

• T1053.001 (At - Linux) - Missing relationship to parent T1053 (Scheduled Task/Job)
• T1547.011 (Plist Modification) - Missing relationship to parent T1547 (Boot or Logon Autostart Execution)

Details

Both objects have:

• "type": "attack-pattern"
• "x_mitre_is_subtechnique": true
• Valid kill_chain_phases arrays

However, no corresponding relationship objects exist with:

• "relationship_type": "subtechnique-of"
• "source_ref" pointing to these subtechniques

Impact

Tools parsing the STIX data that rely on relationship objects (rather than inferring from ID format) will fail to associate these subtechniques with their parent techniques.

Expected Behavior

Each subtechnique should have a corresponding relationship object linking it to its parent technique, consistent with the other 477 subtechniques.

Workaround

Parse the technique ID format (split on .) to infer the parent, but this defeats the purpose of explicit relationship modeling in STIX.

Proposed Fix

Add the following two relationship objects to the objects array in enterprise-attack-18.1.json:

For T1053.001 → T1053

{
  "type": "relationship",
  "spec_version": "2.1",
  "id": "relationship--[generate-new-uuid]",
  "created": "[timestamp]",
  "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "object_marking_refs": [
    "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168"
  ],
  "modified": "[timestamp]",
  "relationship_type": "subtechnique-of",
  "source_ref": "attack-pattern--6636bc83-0611-45a6-b74f-1f3daf635b8e",
  "target_ref": "attack-pattern--35dd844a-b219-4e2b-a6bb-efa9a75995a9",
  "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "x_mitre_deprecated": false,
  "x_mitre_attack_spec_version": "3.2.0"
}

For T1547.011 → T1547

{
  "type": "relationship",
  "spec_version": "2.1",
  "id": "relationship--[generate-new-uuid]",
  "created": "[timestamp]",
  "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "object_marking_refs": [
    "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168"
  ],
  "modified": "[timestamp]",
  "relationship_type": "subtechnique-of",
  "source_ref": "attack-pattern--6747daa2-3533-4e78-8fb8-446ebb86448a",
  "target_ref": "attack-pattern--1ecb2399-e8ba-4f6b-8ba7-5c27d49405cf",
  "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "x_mitre_deprecated": false,
  "x_mitre_attack_spec_version": "3.2.0"
}