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stellar-cyber-mcp-agents

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Model Context Protocol (MCP) server for Stellar Cyber security operations with specialized multi-agent analysis capabilities

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import { BaseAgent } from '../core/base-agent.js'; import { AgentHealth } from '../types/agent.js'; export class MalwareAnalysisAgent extends BaseAgent { config; activeAnalyses = new Map(); analysisCache = new Map(); yaraRules = new Map(); knownFamilies = new Map(); accessToken = null; tokenExpiresAt = 0; refreshPromise = null; constructor(metadata, registry, channel, logger, metrics, config) { super(metadata, registry, channel, logger, metrics); this.config = { analysisTimeout: 300000, // 5 minutes maxConcurrentAnalysis: 5, sandboxEnabled: true, ...config }; } async onInitialize() { this.logger.info('Initializing Malware Analysis Agent'); // Initialize authentication await this.refreshToken(); // Load YARA rules await this.loadYaraRules(); // Load known malware families await this.loadMalwareFamilies(); this.logger.info('Malware Analysis Agent initialized successfully'); } async onStart() { this.logger.info('Starting Malware Analysis Agent'); // Start periodic rule updates this.startRuleUpdates(); this.logger.info('Malware Analysis Agent started successfully'); } async onStop() { this.logger.info('Stopping Malware Analysis Agent'); // Cancel any active analyses await this.cancelActiveAnalyses(); this.logger.info('Malware Analysis Agent stopped successfully'); } async onDestroy() { this.logger.info('Destroying Malware Analysis Agent'); // Clear all state this.activeAnalyses.clear(); this.analysisCache.clear(); this.yaraRules.clear(); this.knownFamilies.clear(); this.logger.info('Malware Analysis Agent destroyed successfully'); } async onHealthCheck() { try { // Check API connectivity const response = await this.makeRequest('GET', '/connect/api/v1/health'); // Check active analyses const activeCount = this.activeAnalyses.size; if (!response.ok) { return AgentHealth.DEGRADED; } if (activeCount > this.config.maxConcurrentAnalysis * 0.9) { return AgentHealth.DEGRADED; } return AgentHealth.HEALTHY; } catch (error) { this.logger.error('Health check failed', { error }); return AgentHealth.UNHEALTHY; } } async handleRequest(request, context) { const { capability, payload } = request; this.logger.debug('Handling Malware Analysis Agent request', { capability, requestId: request.id, sourceAgent: request.sourceAgentId }); switch (capability) { case 'analyze_malware': return await this.analyzeMalware(payload.caseId, payload.artifacts, payload.options); case 'analyze_artifact': return await this.analyzeArtifact(payload.artifact, payload.options); case 'scan_with_yara': return await this.scanWithYara(payload.artifact, payload.rules); case 'sandbox_analysis': return await this.performSandboxAnalysis(payload.artifact, payload.environment); case 'identify_family': return await this.identifyMalwareFamily(payload.artifact); case 'extract_behaviors': return await this.extractBehaviors(payload.analysisId); case 'generate_iocs': return await this.generateIOCs(payload.analysisId); case 'get_family_info': return await this.getFamilyInfo(payload.familyName); case 'bulk_analysis': return await this.performBulkAnalysis(payload.artifacts, payload.options); case 'get_analysis_report': return await this.getAnalysisReport(payload.analysisId); default: throw new Error(`Unknown capability: ${capability}`); } } async analyzeMalware(caseId, artifacts, options = {}) { const analysisId = crypto.randomUUID(); this.logger.info('Starting malware analysis', { analysisId, caseId, artifactCount: artifacts.length }); // Check cache const cacheKey = `${caseId}-${JSON.stringify(artifacts)}`; const cached = this.analysisCache.get(cacheKey); if (cached) { return cached; } // Check if analysis is already running const existingAnalysis = this.activeAnalyses.get(cacheKey); if (existingAnalysis) { return await existingAnalysis; } // Start new analysis const analysisPromise = this.performMalwareAnalysis(analysisId, caseId, artifacts, options); this.activeAnalyses.set(cacheKey, analysisPromise); try { const result = await analysisPromise; // Cache result this.analysisCache.set(cacheKey, result); // Cleanup this.activeAnalyses.delete(cacheKey); return result; } catch (error) { this.activeAnalyses.delete(cacheKey); throw error; } } async performMalwareAnalysis(analysisId, caseId, artifacts, options) { try { const analyzedArtifacts = []; const detections = []; const families = []; const behaviors = []; const allIOCs = []; // Analyze each artifact for (const artifact of artifacts) { const artifactAnalysis = await this.analyzeArtifact(artifact, options); analyzedArtifacts.push(artifactAnalysis); // Collect detections if (artifactAnalysis.analysis.engines) { for (const engine of artifactAnalysis.analysis.engines) { if (engine.result !== 'clean' && engine.result !== 'unknown') { detections.push({ id: crypto.randomUUID(), name: engine.result, type: 'signature', description: `Detected by ${engine.engine}`, severity: this.mapConfidenceToSeverity(engine.confidence), confidence: engine.confidence, artifacts: [artifactAnalysis.id], evidence: [engine.result], engine: engine.engine, timestamp: new Date().toISOString() }); } } } // Identify malware family if (artifactAnalysis.analysis.family) { const familyInfo = await this.getFamilyInfo(artifactAnalysis.analysis.family); if (familyInfo && !families.find(f => f.name === familyInfo.name)) { families.push(familyInfo); } } // Extract behaviors if (options.extractBehaviors) { const artifactBehaviors = await this.extractBehaviorsFromArtifact(artifactAnalysis); behaviors.push(...artifactBehaviors); } // Generate IOCs const iocs = await this.generateIOCsFromArtifact(artifactAnalysis); allIOCs.push(...iocs); } // Calculate overall statistics const summary = this.calculateMalwareSummary(analyzedArtifacts, detections); // Generate recommendations const recommendations = this.generateMalwareRecommendations(analyzedArtifacts, detections, families); // Map to MITRE ATT&CK const mitre = this.mapToMITRE(behaviors, families); const result = { id: analysisId, caseId, timestamp: new Date().toISOString(), summary, artifacts: analyzedArtifacts, detections, families, behaviors, recommendations, iocs: [...new Set(allIOCs)], // Remove duplicates mitre }; this.logger.info('Malware analysis completed', { analysisId, caseId, totalArtifacts: result.summary.totalArtifacts, maliciousArtifacts: result.summary.maliciousArtifacts, detectionsCount: detections.length }); return result; } catch (error) { this.logger.error('Malware analysis failed', { analysisId, caseId, error }); throw error; } } async analyzeArtifact(artifact, options = {}) { this.logger.info('Analyzing artifact', { artifactId: artifact.id, type: artifact.type }); try { const malwareArtifact = { id: artifact.id || crypto.randomUUID(), name: artifact.name || artifact.value, type: artifact.type, value: artifact.value, size: artifact.size, mimeType: artifact.mimeType, hashes: artifact.hashes || {}, analysis: { verdict: 'UNKNOWN', confidence: 0, engines: [], signatures: [], behaviors: [], capabilities: [], persistence: [], networkActivity: [], fileOperations: [], registryOperations: [], processOperations: [] }, detectedAt: new Date().toISOString(), source: 'malware-agent' }; // Perform static analysis if (options.staticAnalysis !== false) { await this.performStaticAnalysis(malwareArtifact); } // Perform YARA scanning if (options.yaraScanning !== false) { await this.performYaraScanning(malwareArtifact); } // Perform VirusTotal lookup if (options.virusTotalLookup !== false && this.config.virusTotalApiKey) { await this.performVirusTotalLookup(malwareArtifact); } // Perform sandbox analysis if (options.sandboxAnalysis && this.config.sandboxEnabled) { await this.performSandboxAnalysisInternal(malwareArtifact); } // Calculate final verdict malwareArtifact.analysis.verdict = this.calculateFinalVerdict(malwareArtifact.analysis); malwareArtifact.analysis.confidence = this.calculateOverallConfidence(malwareArtifact.analysis); this.logger.info('Artifact analysis completed', { artifactId: malwareArtifact.id, verdict: malwareArtifact.analysis.verdict, confidence: malwareArtifact.analysis.confidence }); return malwareArtifact; } catch (error) { this.logger.error('Artifact analysis failed', { artifactId: artifact.id, error }); throw error; } } async performStaticAnalysis(artifact) { // Static analysis implementation this.logger.debug('Performing static analysis', { artifactId: artifact.id }); // File type analysis if (artifact.type === 'file') { artifact.analysis.capabilities.push('file_analysis'); // Check for suspicious file extensions const suspiciousExtensions = ['.exe', '.scr', '.bat', '.cmd', '.pif', '.com']; if (suspiciousExtensions.some(ext => artifact.name.toLowerCase().endsWith(ext))) { artifact.analysis.signatures.push('suspicious_file_extension'); } // Check file size anomalies if (artifact.size && artifact.size < 1024) { artifact.analysis.signatures.push('unusually_small_executable'); } } // Hash-based analysis if (artifact.hashes.md5 || artifact.hashes.sha1 || artifact.hashes.sha256) { artifact.analysis.capabilities.push('hash_analysis'); // Check against known malware hashes (simplified) const knownMalwareHashes = this.getKnownMalwareHashes(); const hashes = [artifact.hashes.md5, artifact.hashes.sha1, artifact.hashes.sha256].filter(Boolean); for (const hash of hashes) { if (knownMalwareHashes.includes(hash)) { artifact.analysis.signatures.push(`known_malware_hash:${hash}`); artifact.analysis.engines.push({ engine: 'internal_hash_db', version: '1.0', result: 'MALICIOUS', confidence: 0.95, categories: ['malware'], timestamp: new Date().toISOString() }); } } } // URL/Domain analysis if (artifact.type === 'url' || artifact.type === 'domain') { artifact.analysis.capabilities.push('url_analysis'); // Check for suspicious URL patterns const suspiciousPatterns = [ /\d+\.\d+\.\d+\.\d+/, // IP addresses /[a-z]{10,}\.tk|\.ml|\.ga|\.cf/, // Suspicious TLDs /bit\.ly|tinyurl|short/, // URL shorteners ]; for (const pattern of suspiciousPatterns) { if (pattern.test(artifact.value)) { artifact.analysis.signatures.push(`suspicious_url_pattern:${pattern.source}`); } } } } async performYaraScanning(artifact) { this.logger.debug('Performing YARA scanning', { artifactId: artifact.id }); try { // Simulate YARA rule matching const rules = Array.from(this.yaraRules.values()); for (const rule of rules) { // Simplified rule matching simulation if (this.simulateYaraMatch(artifact, rule)) { artifact.analysis.signatures.push(`yara:${rule.name}`); artifact.analysis.engines.push({ engine: 'yara', version: '4.0', result: rule.severity || 'SUSPICIOUS', confidence: rule.confidence || 0.8, categories: rule.tags || ['malware'], timestamp: new Date().toISOString() }); } } } catch (error) { this.logger.error('YARA scanning failed', { artifactId: artifact.id, error }); } } async performVirusTotalLookup(artifact) { if (!this.config.virusTotalApiKey) { return; } this.logger.debug('Performing VirusTotal lookup', { artifactId: artifact.id }); try { // Simulate VirusTotal API call const vtResult = await this.simulateVirusTotalLookup(artifact); if (vtResult) { artifact.analysis.engines.push({ engine: 'virustotal', version: '3.0', result: vtResult.verdict, confidence: vtResult.confidence, categories: vtResult.categories, timestamp: new Date().toISOString() }); if (vtResult.family) { artifact.analysis.family = vtResult.family; } } } catch (error) { this.logger.error('VirusTotal lookup failed', { artifactId: artifact.id, error }); } } async performSandboxAnalysisInternal(artifact) { if (!this.config.sandboxEnabled) { return; } this.logger.debug('Performing sandbox analysis', { artifactId: artifact.id }); try { // Simulate sandbox analysis const sandboxResult = await this.simulateSandboxAnalysis(artifact); if (sandboxResult) { // Add sandbox behaviors artifact.analysis.behaviors.push(...sandboxResult.behaviors.map(b => b.description)); artifact.analysis.networkActivity.push(...sandboxResult.networkTraffic); artifact.analysis.fileOperations.push(...sandboxResult.fileChanges); artifact.analysis.registryOperations.push(...sandboxResult.registryChanges); artifact.analysis.processOperations.push(...sandboxResult.processActivity); // Add sandbox engine result artifact.analysis.engines.push({ engine: 'sandbox', version: '2.0', result: sandboxResult.verdict, confidence: sandboxResult.confidence, categories: ['behavioral'], timestamp: new Date().toISOString() }); } } catch (error) { this.logger.error('Sandbox analysis failed', { artifactId: artifact.id, error }); } } calculateFinalVerdict(analysis) { const verdicts = analysis.engines.map(e => e.result); if (verdicts.some(v => v === 'MALICIOUS')) { return 'MALICIOUS'; } if (verdicts.some(v => v === 'SUSPICIOUS')) { return 'SUSPICIOUS'; } if (verdicts.every(v => v === 'CLEAN')) { return 'CLEAN'; } return 'UNKNOWN'; } calculateOverallConfidence(analysis) { if (analysis.engines.length === 0) { return 0; } const confidences = analysis.engines.map(e => e.confidence); return confidences.reduce((sum, conf) => sum + conf, 0) / confidences.length; } calculateMalwareSummary(artifacts, detections) { const maliciousCount = artifacts.filter(a => a.analysis.verdict === 'MALICIOUS').length; const suspiciousCount = artifacts.filter(a => a.analysis.verdict === 'SUSPICIOUS').length; const cleanCount = artifacts.filter(a => a.analysis.verdict === 'CLEAN').length; let riskLevel; let overallVerdict; if (maliciousCount > 0) { riskLevel = 'CRITICAL'; overallVerdict = 'MALICIOUS'; } else if (suspiciousCount > 0) { riskLevel = 'HIGH'; overallVerdict = 'SUSPICIOUS'; } else if (cleanCount > 0) { riskLevel = 'LOW'; overallVerdict = 'CLEAN'; } else { riskLevel = 'MEDIUM'; overallVerdict = 'UNKNOWN'; } return { totalArtifacts: artifacts.length, maliciousArtifacts: maliciousCount, suspiciousArtifacts: suspiciousCount, cleanArtifacts: cleanCount, riskLevel, overallVerdict }; } generateMalwareRecommendations(artifacts, detections, families) { const recommendations = []; const maliciousArtifacts = artifacts.filter(a => a.analysis.verdict === 'MALICIOUS'); if (maliciousArtifacts.length > 0) { recommendations.push('Immediately quarantine all malicious artifacts'); recommendations.push('Perform full system scan on affected endpoints'); recommendations.push('Check for lateral movement indicators'); } if (families.length > 0) { recommendations.push(`Research known TTPs for detected malware families: ${families.map(f => f.name).join(', ')}`); recommendations.push('Update detection signatures for identified malware families'); } const criticalDetections = detections.filter(d => d.severity === 'CRITICAL'); if (criticalDetections.length > 0) { recommendations.push('Escalate critical detections to incident response team'); recommendations.push('Implement network segmentation to prevent spread'); } recommendations.push('Monitor network traffic for C2 communication patterns'); recommendations.push('Update endpoint protection signatures'); recommendations.push('Review and enhance detection rules based on findings'); return recommendations; } mapToMITRE(behaviors, families) { const tactics = new Set(); const techniques = new Set(); // Extract from behaviors behaviors.forEach(behavior => { if (behavior.mitre.tactic) { tactics.add(behavior.mitre.tactic); } if (behavior.mitre.technique) { techniques.add(behavior.mitre.technique); } }); // Extract from families families.forEach(family => { // Families might have known MITRE mappings // This would be populated from threat intelligence }); return { tactics: Array.from(tactics), techniques: Array.from(techniques) }; } // Authentication and API methods async refreshToken() { if (this.refreshPromise) { return this.refreshPromise; } this.refreshPromise = this.performTokenRefresh(); try { await this.refreshPromise; } finally { this.refreshPromise = null; } } async performTokenRefresh() { const response = await fetch(`${this.config.apiUrl}/connect/api/v1/access_token`, { method: 'POST', headers: { 'Authorization': `Bearer ${this.config.apiToken}`, 'Content-Type': 'application/json' } }); if (!response.ok) { throw new Error(`Token refresh failed: ${response.status}`); } const data = await response.json(); this.accessToken = data.access_token; this.tokenExpiresAt = Date.now() + (data.exp * 1000); } async getAccessToken() { if (this.accessToken && Date.now() < this.tokenExpiresAt - 30000) { return this.accessToken; } await this.refreshToken(); return this.accessToken; } async makeRequest(method, endpoint, body) { const token = await this.getAccessToken(); const options = { method, headers: { 'Authorization': `Bearer ${token}`, 'Content-Type': 'application/json', } }; if (body) { options.body = JSON.stringify(body); } const response = await fetch(`${this.config.apiUrl}${endpoint}`, options); return response; } // Helper methods and simulations async loadYaraRules() { // Load default YARA rules const defaultRules = [ { name: 'suspicious_pe', description: 'Suspicious PE file characteristics', tags: ['malware', 'pe'], confidence: 0.7, severity: 'SUSPICIOUS' }, { name: 'malware_strings', description: 'Common malware strings detected', tags: ['malware', 'strings'], confidence: 0.8, severity: 'MALICIOUS' }, { name: 'packed_executable', description: 'Packed or obfuscated executable', tags: ['packer', 'obfuscation'], confidence: 0.6, severity: 'SUSPICIOUS' } ]; defaultRules.forEach(rule => { this.yaraRules.set(rule.name, rule); }); } async loadMalwareFamilies() { // Load known malware families const knownFamilies = [ { id: 'emotet', name: 'Emotet', aliases: ['Geodo', 'Heodo'], description: 'Banking trojan and malware loader', type: 'Trojan', platforms: ['Windows'], capabilities: ['Banking', 'Loader', 'Stealer'], firstSeen: '2014-01-01T00:00:00Z', lastSeen: new Date().toISOString(), prevalence: 0.8, artifacts: [], iocs: [], references: ['https://malpedia.caad.fkie.fraunhofer.de/details/win.emotet'] }, { id: 'trickbot', name: 'TrickBot', aliases: ['Trickster'], description: 'Modular banking trojan', type: 'Trojan', platforms: ['Windows'], capabilities: ['Banking', 'Loader', 'Reconnaissance'], firstSeen: '2016-01-01T00:00:00Z', lastSeen: new Date().toISOString(), prevalence: 0.7, artifacts: [], iocs: [], references: ['https://malpedia.caad.fkie.fraunhofer.de/details/win.trickbot'] } ]; knownFamilies.forEach(family => { this.knownFamilies.set(family.name.toLowerCase(), family); }); } getKnownMalwareHashes() { // Return list of known malware hashes (simplified) return [ '44d88612fea8a8f36de82e1278abb02f', '5d41402abc4b2a76b9719d911017c592', '098f6bcd4621d373cade4e832627b4f6' ]; } simulateYaraMatch(artifact, rule) { // Simplified YARA rule matching simulation if (rule.name === 'suspicious_pe' && artifact.type === 'file') { return artifact.name.endsWith('.exe') || artifact.name.endsWith('.dll'); } if (rule.name === 'malware_strings') { return Math.random() < 0.3; // 30% chance of match } return false; } async simulateVirusTotalLookup(artifact) { // Simulate VirusTotal API response await new Promise(resolve => setTimeout(resolve, 100)); return { verdict: Math.random() < 0.2 ? 'MALICIOUS' : 'CLEAN', confidence: 0.85, categories: ['trojan', 'malware'], family: Math.random() < 0.3 ? 'Emotet' : undefined }; } async simulateSandboxAnalysis(artifact) { // Simulate sandbox analysis await new Promise(resolve => setTimeout(resolve, 200)); return { id: crypto.randomUUID(), artifactId: artifact.id, environment: 'Windows 10', duration: 300, status: 'COMPLETED', verdict: Math.random() < 0.25 ? 'MALICIOUS' : 'CLEAN', confidence: 0.8, behaviors: [], networkTraffic: [], fileChanges: [], registryChanges: [], processActivity: [], screenshots: [], logs: [] }; } mapConfidenceToSeverity(confidence) { if (confidence >= 0.9) return 'CRITICAL'; if (confidence >= 0.7) return 'HIGH'; if (confidence >= 0.5) return 'MEDIUM'; return 'LOW'; } // Placeholder implementations for remaining methods async scanWithYara(artifact, rules) { return []; } async performSandboxAnalysis(artifact, environment) { return {}; } async identifyMalwareFamily(artifact) { return null; } async extractBehaviors(analysisId) { return []; } async generateIOCs(analysisId) { return []; } async getFamilyInfo(familyName) { return this.knownFamilies.get(familyName.toLowerCase()) || null; } async performBulkAnalysis(artifacts, options) { return []; } async getAnalysisReport(analysisId) { return this.analysisCache.get(analysisId) || null; } async extractBehaviorsFromArtifact(artifact) { return []; } async generateIOCsFromArtifact(artifact) { const iocs = []; // Extract IOCs from analysis if (artifact.hashes.md5) iocs.push(artifact.hashes.md5); if (artifact.hashes.sha1) iocs.push(artifact.hashes.sha1); if (artifact.hashes.sha256) iocs.push(artifact.hashes.sha256); // Extract network IOCs artifact.analysis.networkActivity.forEach(activity => { if (activity.suspicious) { iocs.push(activity.destination); } }); return iocs; } startRuleUpdates() { // Skip background timers in MCP mode to prevent EPIPE errors if (process.env.MCP_MODE === 'true') return; setInterval(() => { this.updateRules().catch(error => { this.logger.error('Failed to update rules', { error }); }); }, 3600000); // Update every hour } async updateRules() { // Update YARA rules and malware signatures this.logger.debug('Updating malware detection rules'); } async cancelActiveAnalyses() { // Cancel any running analyses this.activeAnalyses.clear(); } } export function createMalwareAnalysisAgentMetadata() { const capabilities = [ { name: 'analyze_malware', description: 'Comprehensive malware analysis of artifacts', inputSchema: { type: 'object', properties: { caseId: { type: 'string' }, artifacts: { type: 'array' }, options: { type: 'object' } }, required: ['caseId', 'artifacts'] }, outputSchema: { type: 'object', properties: { summary: { type: 'object' }, artifacts: { type: 'array' }, detections: { type: 'array' }, recommendations: { type: 'array' } } } }, { name: 'analyze_artifact', description: 'Analyze individual artifact for malware', inputSchema: { type: 'object', properties: { artifact: { type: 'object' }, options: { type: 'object' } }, required: ['artifact'] }, outputSchema: { type: 'object', properties: { verdict: { type: 'string' }, confidence: { type: 'number' }, analysis: { type: 'object' } } } }, { name: 'scan_with_yara', description: 'Scan artifacts with YARA rules', inputSchema: { type: 'object', properties: { artifact: { type: 'object' }, rules: { type: 'array' } }, required: ['artifact'] }, outputSchema: { type: 'array', items: { type: 'object' } } }, { name: 'identify_family', description: 'Identify malware family of artifact', inputSchema: { type: 'object', properties: { artifact: { type: 'object' } }, required: ['artifact'] }, outputSchema: { type: 'object' } } ]; return { id: { type: 'malware', instance: 'primary', uuid: crypto.randomUUID() }, name: 'Malware Analysis Agent', description: 'Advanced malware detection and analysis agent', version: '1.0.0', capabilities, dependencies: [], resources: { memory: 1024, cpu: 2 } }; } //# sourceMappingURL=malware-agent.js.map