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- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
# API Reference: Threat Hunt Hypothesis Framework
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## Hypothesis Structure
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| Field | Description |
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|-------|------------|
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| hypothesis_id | Unique identifier (HYP-XXXXXXXX) |
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| technique_id | MITRE ATT&CK technique (e.g. T1059.001) |
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| hypothesis_statement | Natural language hypothesis |
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| data_sources | Required log sources |
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| priority | high / medium / low |
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| status | planned / in_progress / completed |
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## MITRE ATT&CK Data Sources
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```bash
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# Download ATT&CK STIX bundle
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curl -O https://raw.githubusercontent.com/mitre/cti/master/enterprise-attack/enterprise-attack.json
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# Filter attack-pattern objects for technique data sources
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python3 -c "
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import json
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bundle = json.load(open('enterprise-attack.json'))
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for obj in bundle['objects']:
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if obj.get('type') == 'attack-pattern' and not obj.get('x_mitre_deprecated'):
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eid = obj['external_references'][0]['external_id']
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ds = [d['source_name'] for d in obj.get('x_mitre_data_sources', [])]
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print(f'{eid}: {ds}')
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"
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```
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## Hunt Maturity Model (HMM)
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| Level | Name | Description |
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|-------|------|------------|
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| HM0 | Initial | Ad hoc, no documented procedures |
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| HM1 | Minimal | Basic procedures, limited data sources |
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| HM2 | Procedural | Documented hypotheses, repeatable hunts |
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| HM3 | Innovative | Custom analytics, TI-driven hypotheses |
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| HM4 | Leading | Automated, ML-assisted, continuous hunting |
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## Key Windows Event IDs for Hunting
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| Event ID | Source | Use Case |
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|----------|--------|----------|
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| 4104 | PowerShell | Script block logging |
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| 4688 | Security | Process creation |
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| 4624/4625 | Security | Logon success/failure |
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| 4698 | Security | Scheduled task created |
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| 1 (Sysmon) | Sysmon | Process create with hashes |
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| 3 (Sysmon) | Sysmon | Network connection |
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| 10 (Sysmon) | Sysmon | Process access (LSASS) |
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| 11 (Sysmon) | Sysmon | File create |
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## Sigma Rule Integration
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```yaml
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title: Suspicious PowerShell Execution
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status: experimental
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logsource:
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product: windows
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service: powershell
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detection:
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selection:
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EventID: 4104
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ScriptBlockText|contains:
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- 'Invoke-Mimikatz'
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- 'Invoke-Expression'
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condition: selection
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level: high
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```
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