{
  "model_id": "SOC.039",
  "name": "rc.local Modified",
  "description": "rc.local changed — classic boot-time persistence. Modern distros don't use rc.local by default.",
  "threshold": 0.7,
  "evaluations": [
    {
      "name": "RcMod",
      "type": "comparison",
      "left": "event.type",
      "operator": "==",
      "right": "persistence.rc.modified",
      "weight": 4
    }
  ],
  "actions": [
    {
      "type": "emit_alert",
      "reason": "rc.local modified — boot-time persistence vector."
    }
  ],
  "mitre_tactics": [
    "Persistence"
  ],
  "mitre_techniques": [
    "T1037"
  ],
  "severity": "high",
  "observables": [
    "event.raw.path"
  ]
}