# WIA-SEC-022: Ransomware Protection Standard
## PHASE 2, 3 & 4 - ADVANCED FEATURES

**Standard ID:** WIA-SEC-022
**Version:** 1.0.0
**Status:** Active
**Last Updated:** 2025-12-25

---

## PHASE 2 - ADVANCED DETECTION & RESPONSE

### 2.1 Advanced Behavioral Analysis

#### 2.1.1 User and Entity Behavior Analytics (UEBA)
Establish baselines for normal user and system behavior to detect anomalies indicative of ransomware.

**Baseline Metrics:**
- **File Access Patterns**: Typical files accessed, frequency, time of day
- **Network Behavior**: Normal destinations, data transfer volumes
- **Application Usage**: Commonly used applications, execution times
- **Login Patterns**: Typical login times, locations, devices

**Anomaly Detection:**
```python
anomalies = {
    "unusual_time": "File access at 3 AM (user typically works 9-5)",
    "unusual_volume": "10GB file access (typical: 500MB/day)",
    "unusual_location": "Access from external IP (user always local)",
    "unusual_application": "Unknown executable (never seen before)"
}

risk_score = calculate_risk(anomalies)
if risk_score > 85:
    trigger_investigation()
```

#### 2.1.2 Lateral Movement Detection
Ransomware often spreads across networks. Detect lateral movement attempts:

**Detection Indicators:**
- Multiple failed authentication attempts across systems
- Privilege escalation attempts
- Accessing admin shares (C$, ADMIN$)
- PsExec, WMI, or RDP connections to multiple hosts
- Credential dumping tools (Mimikatz, LaZagne)

**Network Traffic Analysis:**
```
Source: workstation-42 (192.168.1.105)
Targets:
  - fileserver-01 (445/SMB) - FAILED AUTH x5
  - fileserver-02 (445/SMB) - SUCCESS
  - workstation-43 (3389/RDP) - CONNECTION
  - workstation-44 (3389/RDP) - CONNECTION

Verdict: LATERAL_MOVEMENT_DETECTED
Action: ISOLATE_SOURCE + ALERT_SOC
```

#### 2.1.3 Credential Theft Detection
Monitor for credential harvesting activities:

- **LSASS Memory Access**: Detect attempts to read LSASS process memory
- **SAM Database Access**: Monitor access to Security Account Manager database
- **Kerberos Ticket Extraction**: Detect tools extracting Kerberos tickets
- **Registry Key Access**: Monitor HKLM\SAM, HKLM\SECURITY

---

### 2.2 Deception Technology

#### 2.2.1 Honeypot Files
Deploy decoy files throughout the file system to detect ransomware scanning.

**Honeypot Strategy:**
```json
{
  "honeypots": [
    {
      "name": "Financial_Records_2025_CONFIDENTIAL.xlsx",
      "path": "C:\\Users\\jdoe\\Documents\\",
      "canary": true,
      "monitor": "READ|WRITE|MODIFY|DELETE"
    },
    {
      "name": "Passwords.txt",
      "path": "C:\\Users\\jdoe\\Desktop\\",
      "canary": true,
      "trigger": "IMMEDIATE_ISOLATION"
    }
  ],
  "detection": {
    "action": "Any access to honeypot triggers alert",
    "confidence": "99.9% (legitimate users never access these)"
  }
}
```

**Benefits:**
- Early detection (ransomware scans for valuable files first)
- High confidence (false positives near zero)
- Forensic value (tracks attacker behavior)

#### 2.2.2 Canary Tokens
Embed canary tokens in documents, databases, and configuration files.

**Token Types:**
- **DNS Canaries**: Trigger alert when domain is queried
- **Web Beacons**: Alert when specific URL is accessed
- **AWS Keys**: Fake AWS credentials that alert when used
- **Email Addresses**: Alert when email is sent to address

---

### 2.3 Threat Intelligence Integration

#### 2.3.1 Real-Time Threat Feeds
Integrate with global threat intelligence platforms:

**Supported Feeds:**
- **MITRE ATT&CK**: Tactics, techniques, and procedures (TTPs)
- **AlienVault OTX**: Community-driven threat intelligence
- **Abuse.ch**: Ransomware tracker, malware hashes
- **VirusTotal**: File and URL reputation
- **Commercial Feeds**: Recorded Future, ThreatConnect, Anomali

**Feed Integration:**
```json
{
  "threatIntel": {
    "feeds": [
      {
        "provider": "abuse.ch",
        "type": "ransomware_tracker",
        "updateFrequency": "hourly",
        "indicators": ["IP", "domain", "hash", "C2"]
      },
      {
        "provider": "MITRE-ATTACK",
        "type": "TTPs",
        "mapping": "T1486 (Data Encrypted for Impact)"
      }
    ],
    "autoBlock": true,
    "confidence_threshold": 0.8
  }
}
```

#### 2.3.2 IOC Matching
Automatically match observed indicators against threat feeds:

```python
def check_ioc(indicator, indicator_type):
    """
    Check if indicator matches known ransomware IOC
    """
    feeds = load_threat_feeds()

    for feed in feeds:
        if match := feed.search(indicator, indicator_type):
            return {
                "matched": True,
                "threat": match.threat_name,
                "family": match.ransomware_family,
                "confidence": match.confidence,
                "source": feed.name,
                "recommendation": "BLOCK_AND_INVESTIGATE"
            }

    return {"matched": False}

# Example usage
result = check_ioc("192.0.2.100", "IP")
# Result: {"matched": True, "threat": "LockBit C2 Server", ...}
```

---

### 2.4 Memory Forensics

#### 2.4.1 Memory Acquisition
Capture volatile memory when ransomware is detected:

**Tools Integration:**
- **Volatility**: Open-source memory forensics
- **Rekall**: Advanced memory analysis
- **WinPmem**: Windows memory acquisition
- **LiME**: Linux Memory Extractor

**Acquisition Process:**
```bash
# Immediate memory dump on detection
./winpmem-3.3.rc3.exe physmem.raw

# Analyze for ransomware artifacts
volatility -f physmem.raw --profile=Win10x64 malfind
volatility -f physmem.raw --profile=Win10x64 hollowfind
```

#### 2.4.2 Analysis Automation
Automated memory analysis for rapid threat identification:

**Analysis Steps:**
1. **Process Enumeration**: List all running processes
2. **Code Injection Detection**: Identify injected code
3. **Network Connections**: Map active network connections
4. **Registry Keys**: Extract suspicious registry modifications
5. **Encryption Keys**: Attempt to recover ransomware encryption keys

---

## PHASE 3 - RECOVERY & BUSINESS CONTINUITY

### 3.1 Disaster Recovery Automation

#### 3.1.1 Recovery Runbooks
Automated playbooks for different ransomware scenarios:

**Scenario 1: Single Workstation Infection**
```yaml
runbook: "workstation_infection"
steps:
  - name: "Isolate Endpoint"
    action: "network_isolation"
    timeout: "30s"

  - name: "Terminate Malicious Process"
    action: "kill_process"
    target: "detected_pid"

  - name: "Scan Network Shares"
    action: "scan_shares"
    scope: "user_accessible"

  - name: "Restore from Backup"
    action: "restore_latest_clean"
    verify: true

  - name: "Malware Scan"
    action: "full_system_scan"

  - name: "Gradual Reconnection"
    action: "monitored_network_access"
    duration: "72h"
```

**Scenario 2: Server Infection**
```yaml
runbook: "server_infection"
priority: "CRITICAL"
steps:
  - name: "Failover to Secondary"
    action: "activate_standby_server"

  - name: "Isolate Infected Server"
    action: "network_isolation"

  - name: "Forensic Capture"
    action: "memory_dump + disk_image"

  - name: "Restore from Immutable Backup"
    action: "restore_from_worm"
    verify: "hash_verification"

  - name: "Integrity Check"
    action: "full_integrity_scan"

  - name: "Gradual Cutover"
    action: "staged_production_return"
```

#### 3.1.2 Prioritized Recovery
Not all systems are equal. Recover in order of business criticality:

**Priority Tiers:**
```json
{
  "tier1_critical": {
    "rto": "15 minutes",
    "systems": [
      "payment_processing",
      "customer_database",
      "authentication_servers"
    ],
    "backup_frequency": "continuous",
    "testing_frequency": "weekly"
  },
  "tier2_important": {
    "rto": "1 hour",
    "systems": [
      "email_servers",
      "file_servers",
      "crm_systems"
    ],
    "backup_frequency": "hourly",
    "testing_frequency": "monthly"
  },
  "tier3_standard": {
    "rto": "4 hours",
    "systems": [
      "internal_tools",
      "development_environments"
    ],
    "backup_frequency": "daily",
    "testing_frequency": "quarterly"
  }
}
```

---

### 3.2 Business Continuity Planning

#### 3.2.1 Continuity of Operations (COOP)
Maintain critical business functions during recovery:

**Alternative Operating Procedures:**
- **Manual Processes**: Paper-based workflows for critical operations
- **Alternative Sites**: Failover to DR site or cloud infrastructure
- **Third-Party Services**: Temporary use of SaaS alternatives
- **Communication Plan**: Stakeholder notification procedures

#### 3.2.2 Tabletop Exercises
Regular exercises to validate recovery procedures:

**Exercise Schedule:**
- **Monthly**: Single-system recovery drill
- **Quarterly**: Department-wide recovery simulation
- **Annually**: Organization-wide disaster recovery exercise

**Sample Scenario:**
```
Scenario: Widespread ransomware attack affects 200 workstations and 5 servers
Objectives:
  1. Isolate infected systems within 5 minutes
  2. Restore critical servers within 30 minutes
  3. Notify stakeholders within 1 hour
  4. Restore 80% of workstations within 4 hours

Success Metrics:
  - Detection time: <2 minutes
  - Isolation time: <5 minutes
  - Server RTO: <30 minutes
  - Communication effectiveness: 90%+
```

---

### 3.3 Post-Incident Analysis

#### 3.3.1 Forensic Investigation
Thorough analysis to understand attack vectors and prevent recurrence:

**Investigation Areas:**
1. **Initial Access**: How did ransomware enter the environment?
   - Phishing email?
   - Exploited vulnerability?
   - Compromised credentials?
   - Supply chain attack?

2. **Lateral Movement**: How did it spread?
   - Network shares?
   - Remote desktop?
   - Exploited trust relationships?

3. **Data Exfiltration**: Was data stolen before encryption?
   - Monitor for double extortion attempts
   - Check for unusual outbound transfers

4. **Lessons Learned**: What can be improved?
   - Detection capabilities
   - Response procedures
   - User training
   - Technical controls

#### 3.3.2 Root Cause Analysis
```markdown
# Incident Report: INC-20251225-001

## Executive Summary
Ransomware infection detected on 1 workstation, contained within 3 minutes, zero data loss.

## Timeline
- 10:35:00 - Malicious executable launched via phishing email
- 10:35:12 - Behavioral detection triggered alert
- 10:35:15 - Automated isolation executed
- 10:35:45 - Process terminated, snapshot created
- 10:40:00 - Workstation restored from backup

## Root Cause
User clicked malicious link in phishing email bypassing email filter.

## Corrective Actions
1. Update email filter rules (completed)
2. Additional phishing awareness training (scheduled)
3. Implement URL sandboxing (in progress)
4. Review and update allow-lists (completed)

## Recommendations
- Deploy application whitelisting
- Implement MFA for all users
- Increase backup frequency for critical users
```

---

## PHASE 4 - ADVANCED PROTECTION MECHANISMS

### 4.1 Application Whitelisting

#### 4.1.1 Allow-List Enforcement
Only permit execution of approved applications:

**Windows AppLocker Policy:**
```xml
<AppLockerPolicy Version="1">
  <RuleCollection Type="Exe" EnforcementMode="Enabled">
    <!-- Allow Windows system binaries -->
    <FilePathRule Id="windows-system"
      Action="Allow"
      Path="%WINDIR%\*" />

    <!-- Allow Program Files -->
    <FilePathRule Id="program-files"
      Action="Allow"
      Path="%PROGRAMFILES%\*" />

    <!-- Deny user writable locations -->
    <FilePathRule Id="block-temp"
      Action="Deny"
      Path="%TEMP%\*.exe" />
    <FilePathRule Id="block-appdata"
      Action="Deny"
      Path="%APPDATA%\*.exe" />
  </RuleCollection>
</AppLockerPolicy>
```

**Benefits:**
- Prevents execution of ransomware from common drop locations
- Reduces attack surface significantly
- Low performance overhead

---

### 4.2 Network Segmentation

#### 4.2.1 Zero Trust Architecture
Implement micro-segmentation to limit ransomware spread:

**Network Zones:**
```
┌─────────────────────────────────────────┐
│ ZONE 1: Critical Infrastructure         │
│ - Domain Controllers                     │
│ - Backup Servers (air-gapped access)     │
│ - Database Servers                       │
│ Access: Strictly controlled, MFA required│
└─────────────────────────────────────────┘
         ↕ (Firewall + IPS)
┌─────────────────────────────────────────┐
│ ZONE 2: Application Servers              │
│ - Web servers                            │
│ - Application servers                    │
│ Access: Service accounts only            │
└─────────────────────────────────────────┘
         ↕ (Firewall + IPS)
┌─────────────────────────────────────────┐
│ ZONE 3: User Workstations                │
│ - Employee endpoints                     │
│ - VDI sessions                           │
│ Access: User authentication              │
└─────────────────────────────────────────┘
```

#### 4.2.2 Firewall Rules
Prevent lateral movement with restrictive firewall policies:

```bash
# Block workstation-to-workstation SMB
iptables -A FORWARD -s 192.168.1.0/24 -d 192.168.1.0/24 -p tcp --dport 445 -j DROP

# Block RDP between workstations
iptables -A FORWARD -s 192.168.1.0/24 -d 192.168.1.0/24 -p tcp --dport 3389 -j DROP

# Allow only to designated RDP gateways
iptables -A FORWARD -d 192.168.10.100 -p tcp --dport 3389 -j ACCEPT
```

---

### 4.3 Credential Protection

#### 4.3.1 Credential Guard
Enable Windows Credential Guard to protect credentials:

```powershell
# Enable Credential Guard
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\DeviceGuard" -Name "EnableVirtualizationBasedSecurity" -Value 1
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa" -Name "LsaCfgFlags" -Value 1
```

#### 4.3.2 Least Privilege Access
Minimize privileges to limit ransomware impact:

**Principles:**
- Users run with standard (non-admin) accounts
- Admin rights granted via Just-In-Time (JIT) access
- Service accounts have minimal necessary permissions
- Privileged Access Workstations (PAWs) for admin tasks

---

### 4.4 Secure Boot & TPM

#### 4.4.1 UEFI Secure Boot
Prevent bootkit and rootkit infections:

**Requirements:**
- UEFI firmware with Secure Boot
- Signed bootloader and kernel
- TPM 2.0 chip for measured boot

**Configuration:**
```bash
# Verify Secure Boot status
mokutil --sb-state
# Expected: SecureBoot enabled

# Check TPM status
cat /sys/class/tpm/tpm0/device/enabled
# Expected: 1
```

#### 4.4.2 BitLocker / LUKS Encryption
Full disk encryption prevents offline attacks:

**Windows BitLocker:**
```powershell
Enable-BitLocker -MountPoint "C:" -EncryptionMethod XtsAes256 -TpmProtector
```

**Linux LUKS:**
```bash
cryptsetup luksFormat /dev/sda2 --type luks2 --cipher aes-xts-plain64 --key-size 512
```

---

### 4.5 Email & Web Protection

#### 4.5.1 Advanced Email Filtering
Multi-layer email security to prevent phishing:

**Layers:**
1. **SPF/DKIM/DMARC**: Verify sender authenticity
2. **Sandbox Analysis**: Detonate attachments in sandbox
3. **URL Rewriting**: Proxy all links through security gateway
4. **AI-Based Detection**: Identify phishing patterns

**Email Gateway Config:**
```json
{
  "email_security": {
    "sandbox": {
      "enabled": true,
      "timeout": "60s",
      "file_types": [".exe", ".zip", ".pdf", ".doc", ".xls"]
    },
    "url_protection": {
      "rewrite": true,
      "time_of_click": true,
      "categories_blocked": ["malware", "phishing", "newly_registered"]
    },
    "attachment_blocking": {
      "extensions": [".exe", ".scr", ".bat", ".cmd", ".ps1"]
    }
  }
}
```

#### 4.5.2 Web Content Filtering
Block access to malicious and risky sites:

**Categories to Block:**
- Malware distribution sites
- Phishing sites
- Newly registered domains (<30 days)
- Tor exit nodes
- File sharing sites (reduce risk)

---

### 4.6 Continuous Monitoring & Improvement

#### 4.6.1 Security Metrics Dashboard
Real-time visibility into ransomware protection posture:

**Key Metrics:**
- Detection rate (should be >99.5%)
- False positive rate (should be <0.1%)
- Average response time (target: <100ms)
- Backup success rate (should be 100%)
- Mean time to recovery (MTTR)
- Employee training completion rate

#### 4.6.2 Continuous Improvement
Regular reviews and updates:

**Monthly:**
- Review detection logs and false positives
- Update detection rules and signatures
- Patch management review

**Quarterly:**
- DR drill execution
- Security training for employees
- Threat landscape assessment

**Annually:**
- Full security audit
- Penetration testing
- Policy and procedure review

---

## Summary

This comprehensive ransomware protection standard provides:

✅ **Prevention**: Multiple layers prevent ransomware from executing
✅ **Detection**: Advanced AI and behavioral analysis detect threats <100ms
✅ **Response**: Automated isolation and containment within milliseconds
✅ **Recovery**: Immutable backups ensure rapid recovery (RTO <15 min)
✅ **Resilience**: Business continuity planning maintains operations
✅ **Improvement**: Continuous monitoring and testing strengthen defenses

---

**Related Documents:**
- [PHASE 1 - Core Specification](./PHASE-1-CORE.md)
- [Appendix - Implementation Guides](./SPEC-APPENDIX.md)
- [Glossary - Terms & Definitions](./SPEC-GLOSSARY.md)

---

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