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mukul975
cb8d79e068
- Add validated mitre_attack frontmatter to all 754 skills (286 distinct techniques), verified against MITRE ATT&CK v19.1 via the official mitreattack-python library: 0 revoked, deprecated, or invalid IDs - Curate precise per-skill technique IDs for forensics, malware-analysis, threat-intel, and red-team skills (e.g. DCSync -> T1003.006, Kerberoasting -> T1558.003, Pass-the-Ticket -> T1550.003) - Reconcile v19.1 tactic restructuring: Defense Evasion split into Stealth (TA0005) and Defense Impairment (TA0112); revoked T1562.* family and T1070.001/.002 remapped to active equivalents (T1685.*) - Normalize word-split tags across 35 skills (remove filename-derived stopword tags, add semantic cybersecurity tags) - Add api-reference.md for 3 skills that were missing it - Update README ATT&CK section with accurate v19.1 tactic distribution
114 lines
4.2 KiB
Markdown
114 lines
4.2 KiB
Markdown
---
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name: implementing-email-sandboxing-with-proofpoint
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description: Email sandboxing detonates suspicious attachments and URLs in isolated
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environments to detect zero-day malware and evasive phishing payloads. Proofpoint
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Targeted Attack Protection (TAP) is an industry
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domain: cybersecurity
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subdomain: phishing-defense
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tags:
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- phishing
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- email-security
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- social-engineering
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- dmarc
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- awareness
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- sandboxing
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- proofpoint
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version: '1.0'
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author: mahipal
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license: Apache-2.0
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nist_csf:
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- PR.AT-01
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- DE.CM-09
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- RS.CO-02
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- DE.AE-02
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mitre_attack:
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- T1566
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- T1598
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- T1534
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- T1036
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- T1027
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---
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# Implementing Email Sandboxing with Proofpoint
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## Overview
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Email sandboxing detonates suspicious attachments and URLs in isolated environments to detect zero-day malware and evasive phishing payloads. Proofpoint Targeted Attack Protection (TAP) is an industry-leading solution that uses multi-stage sandboxing, URL rewriting, and predictive analysis. This skill covers configuring Proofpoint TAP, integrating with email flow, analyzing sandbox reports, and tuning detection policies.
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## When to Use
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- When deploying or configuring implementing email sandboxing with proofpoint capabilities in your environment
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- When establishing security controls aligned to compliance requirements
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- When building or improving security architecture for this domain
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- When conducting security assessments that require this implementation
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## Prerequisites
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- Proofpoint Email Protection license with TAP add-on
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- Admin access to Proofpoint admin console
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- Understanding of email delivery architecture (MX records, mail flow rules)
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- SIEM integration capability
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## Key Concepts
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### Proofpoint TAP Capabilities
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1. **Attachment sandboxing**: Detonates files in virtual machines (Windows, macOS, Android)
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2. **URL Defense**: Rewrites URLs, detonates at time-of-click
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3. **Threat Intelligence**: Proofpoint's NexusAI threat intelligence integration
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4. **TAP Dashboard**: Real-time visibility into threats targeting the organization
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5. **Campaign correlation**: Groups related attacks into campaigns
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6. **Very Attacked People (VAP)**: Identifies most-targeted individuals
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### Sandbox Evasion Techniques Detected
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- Delayed execution (time-bomb malware)
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- VM detection bypass
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- User interaction requirements (click-to-enable macros)
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- Sandbox-aware malware that checks for analysis environment
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- Encrypted/password-protected attachments
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- Multi-stage payloads with delayed C2 retrieval
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## Workflow
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### Step 1: Configure TAP in Proofpoint
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- Enable TAP for inbound email policy
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- Configure sandbox profiles (attachment types to detonate)
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- Set URL Defense rewriting policy
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- Configure quarantine actions for malicious verdicts
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### Step 2: Tune Attachment Policies
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```
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Recommended attachment policy:
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- Detonate: .exe, .dll, .scr, .doc(m), .xls(m), .ppt(m), .pdf, .zip, .rar, .7z, .iso
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- Block without detonation: .bat, .cmd, .ps1, .vbs, .js, .wsf, .hta
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- Password-protected archives: Attempt common passwords, then quarantine
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- Dynamic delivery: Deliver email body, hold attachment until verdict
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```
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### Step 3: Configure URL Defense
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- Enable URL rewriting for all inbound email
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- Set time-of-click detonation
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- Block access to malicious URLs
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- Show warning page for suspicious (not confirmed malicious) URLs
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- Configure allowed domains bypass list
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### Step 4: Set Up TAP Dashboard Monitoring
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- Configure daily threat digest emails to security team
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- Set up real-time alerts for targeted attacks
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- Monitor VAP report for high-risk users
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- Review campaign clusters for coordinated attacks
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### Step 5: Integrate with SIEM
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- Configure syslog/API export to SIEM
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- Create correlation rules for TAP alerts
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- Set up automated response workflows
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## Tools & Resources
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- **Proofpoint TAP**: https://www.proofpoint.com/us/products/advanced-threat-protection
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- **Proofpoint TAP Dashboard**: https://threatinsight.proofpoint.com/
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- **Proofpoint API**: https://help.proofpoint.com/Threat_Insight_Dashboard/API_Documentation
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- **Proofpoint Community**: https://community.proofpoint.com/
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## Validation
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- Attachment detonation catches EICAR test file and macro-enabled document
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- URL Defense rewrites and blocks known phishing URLs
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- TAP Dashboard displays threat summary
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- SIEM receives and alerts on TAP events
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