The file C:\Users\MikeSwanson\Claude\session-logs\2026-01-05-session.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file: 281→--- 282→ 283→### Files & Locations 284→ 285→- **Phishing email:** `D:\Workplace\Personal Documents\Profile\Documents\DF Spam\` 286→- **QR phishing attachment:** `ATT29306.docx` 287→- **Malicious URL:** `https://acuvatech.cyou?a=ghaubner@dataforth.com` 288→ 289→--- 290→ 291→## Update: 21:30 - Phishing Remediation Complete 292→ 293→### Ticket: Phishing Attempt - Determine Entrypoint and Resolve 294→ 295→### Actions Completed 296→ 297→#### 1. Deleted "true" App Registration 298→- **App ID:** a21e971d-1fcb-41a7-9b01-c45b8d7d1754 299→- **Action:** Manually deleted in Entra ID by admin 300→- **Reason:** Unused app with Mail.Read/Mail.Send permissions, created by internal user but never used 301→ 302→#### 2. Deleted Phishing Emails from All Mailboxes 303→Used Graph API to search and delete phishing emails across all 148 user mailboxes. 304→ 305→**Emails Deleted:** 306→| Mailbox | Subject | Campaign | 307→|---------|---------|----------| 308→| jlohr@dataforth.com | Please Review: Dataforth corporation 2026 Updated Pay Structure & Appraisal Guidelines ID-ssEcpoQ1EQ | January 2026 | 309→| jlohr@dataforth.com | Dataforth corporation – December Bonus and Allocation for All Staff (x3) | December 2025 | 310→| jlohr@dataforth.com | Reminder: Dataforth corporation – December Bonus... | December 2025 | 311→| jantar@dataforth.com | Dataforth corporation – December Bonus and Allocation for All Staff (x2) | December 2025 | 312→| jantar@dataforth.com | Dataforth corporation – January Bonus and Allocation for All Staff | January 2026 | 313→| jantar@dataforth.com | Reminder: Dataforth corporation – December Bonus... | December 2025 | 314→| croedig@dataforth.com | Dataforth corporation – December Bonus and Allocation for All Staff | December 2025 | 315→ 316→**Total: 10 phishing emails deleted** 317→ 318→Internal discussion threads (RE:/FW: emails) were preserved for audit trail. 319→ 320→#### 3. Configured Exchange Online Mail Flow Protection 321→ 322→**Root Cause:** Phishing emails bypassed MailProtector by connecting directly to M365's MX endpoint (`dataforth-com.mail.protection.outlook.com`) instead of routing through the MX records pointing to MailProtector. 323→ 324→**Solution Implemented:** 325→ 326→**A. Inbound Connector Created** 327→- **Name:** MailProtector Inbound 328→- **Type:** Partner organization → Office 365 329→- **Sender IPs:** 52.0.31.31, 52.0.74.211, 52.0.70.91 330→ 331→**B. Transport Rule Created** 332→- **Name:** Mailptroctor Only (Reject Direct Mail) 333→- **Priority:** 0 (highest) 334→- **Mode:** Enforce 335→- **Condition:** Sender is located 'NotInOrganization' (external) 336→- **Action:** Reject with explanation "Direct Mail Not Allowed - Please route through MX" (status code 5.7.1) 337→- **Exception:** Sender IP is in range 52.0.70.91, 52.0.74.211, or 52.0.31.31 338→ 339→**Testing Results:** 340→- SMTP connection to M365 still accepts messages at protocol level (normal behavior) 341→- Transport rule rejects messages during processing - they never reach inbox 342→- Verified by sending test emails from non-MailProtector IP - none delivered 343→ 344→--- 345→ 346→### Attack Summary 347→ 348→| Campaign | Date | Subject Pattern | Method | 349→|----------|------|-----------------|--------| 350→| December 2025 | ~Dec 2025 | "December Bonus and Allocation for All Staff" | QR code → credential harvest | 351→| January 2026 | 2026-01-04 | "2026 Updated Pay Structure & Appraisal Guidelines" | QR code → credential harvest | 352→ 353→**Attack Vector:** 354→1. Attacker spoofs internal sender (ghaubner, jlohr, etc.) 355→2. Sends directly to `dataforth-com.mail.protection.outlook.com` (bypasses MX/MailProtector) 356→3. M365 accepts despite SPF fail (no enforcement without transport rule) 357→4. Attachment contains QR code linking to `acuvatech.cyou?a=victim@dataforth.com` 358→5. QR code leads to credential harvesting page with pre-populated email 359→ 360→**Origin IP:** 31.57.166.164 (no reverse DNS, external) 361→ 362→--- 363→ 364→### Security Status After Remediation 365→ 366→| Category | Before | After | Notes | 367→|----------|--------|-------|-------| 368→| Phishing Emails | Present | ✅ Removed | 10 emails deleted | 369→| "true" App | Present | ✅ Deleted | Removed from Entra | 370→| Direct M365 Bypass | ⚠️ Vulnerable | ✅ Blocked | Transport rule enforcing | 371→| OAuth Consents | ✅ Clean | ✅ Clean | No changes needed | 372→| MailProtector | Working | Working | Now enforced as only path | 373→ 374→--- 375→ 376→### MailProtector Gateway IPs (Reference) 377→ 378→These IPs are authorized to deliver mail to Dataforth M365: 379→``` 380→52.0.31.31 381→52.0.74.211 382→52.0.70.91 383→``` 384→ 385→--- 386→ 387→### Verification Steps 388→ 389→To verify transport rule is working: 390→1. **Exchange Admin Center** → **Mail flow** → **Message trace** 391→2. Search for sender: `attacker@malicious.com` (or any external) 392→3. Messages from non-MailProtector IPs should show **Failed/Rejected** 393→4. Rejection reason: "Transport rule: Mailptroctor Only (Reject Direct Mail)" 394→ 395→--- 396→ 397→### Recommendations 398→ 399→1. ✅ **COMPLETED:** Block direct M365 connections (transport rule) 400→2. ✅ **COMPLETED:** Remove phishing emails from all mailboxes 401→3. ✅ **COMPLETED:** Delete suspicious "true" app registration 402→4. **Consider:** External email warning banner for spoofed internal senders 403→5. **Consider:** User awareness training about QR code phishing 404→6. **Monitor:** Message trace for rejected bypass attempts 405→