Initial SOC memory POC implementation

evaluation/datasets/normalized_cases/CASE-2026-0004.json

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+{
+  "id": "CASE-2026-0004",
+  "memory_type": "case",
+  "scenario": "phishing",
+  "title": "Shared mailbox received OneDrive lure with HTML attachment",
+  "abstract": "Shared finance mailbox received a fake OneDrive notification with an HTML attachment that led to credential collection.",
+  "verdict": "true_positive",
+  "severity": "medium",
+  "entities": {
+    "users": [
+      "shared-finance@corp.example"
+    ],
+    "hosts": [],
+    "mailboxes": [
+      "shared-finance@corp.example"
+    ]
+  },
+  "observables": {
+    "sender_emails": [
+      "noreply@sharepoint-notify.com"
+    ],
+    "domains": [
+      "sharepoint-notify.com"
+    ],
+    "urls": [
+      "https://onedrive-review-login.example"
+    ],
+    "ips": [
+      "198.51.100.87"
+    ],
+    "hashes": [
+      "sha256:phish0004"
+    ]
+  },
+  "evidence": [
+    "Attachment rendered a fake Microsoft sign-in page.",
+    "Landing page hosted outside Microsoft IP space.",
+    "Mail body reused branding from previous phishing campaign."
+  ],
+  "patterns": [
+    "verdict:true_positive",
+    "scenario:phishing",
+    "alert_type:mail_suspicious_attachment"
+  ],
+  "related_refs": {
+    "playbooks": [
+      "PB-PHISH-001"
+    ],
+    "kb": [
+      "KB-CRED-HARVEST-PATTERNS"
+    ],
+    "cases": [
+      "CASE-2026-0001"
+    ]
+  },
+  "source_path": "/home/tom/soc_memory_poc/evaluation/datasets/mock_cases/phishing/CASE-2026-0004.json",
+  "tags": [
+    "phishing",
+    "email",
+    "onedrive-lure"
+  ]
+}