{
  "id": "CASE-2026-1003",
  "memory_type": "case",
  "scenario": "o365_suspicious_login",
  "title": "Suspicious inbox rule creation after successful foreign login",
  "abstract": "An overseas sign-in to Microsoft 365 was followed by inbox rule creation to hide finance-related emails.",
  "verdict": "true_positive",
  "severity": "high",
  "entities": {
    "users": [
      "emma@corp.example"
    ],
    "hosts": [
      "WS-EMMA-07"
    ],
    "mailboxes": [
      "emma@corp.example"
    ]
  },
  "observables": {
    "ips": [
      "198.51.100.98"
    ],
    "domains": [],
    "urls": [],
    "hashes": []
  },
  "evidence": [
    "Successful sign-in from untrusted ASN.",
    "Inbox rule moved wire transfer emails to RSS Feeds folder.",
    "Mailbox audit showed rule creation minutes after login."
  ],
  "patterns": [
    "verdict:true_positive",
    "scenario:o365_suspicious_login",
    "alert_type:azuread_suspicious_inbox_rule_after_login"
  ],
  "related_refs": {
    "playbooks": [
      "PB-O365-LOGIN-001"
    ],
    "kb": [
      "KB-O365-INBOX-RULE-ABUSE",
      "KB-O365-IMPOSSIBLE-TRAVEL"
    ],
    "cases": []
  },
  "source_path": "/home/tom/soc_memory_poc/evaluation/datasets/mock_cases/o365_suspicious_login/CASE-2026-1003.json",
  "tags": [
    "o365",
    "login",
    "inbox-rule",
    "account-compromise"
  ]
}