Skill Security Auditor

Skill Security Auditor

Description

The Skill Security Auditor is a defensive cybersecurity tool designed to protect OpenClaw users from malicious ClawHub skills. Given the recent discovery of 341+ malicious skills (ClawHavoc campaign) that distributed Atomic Stealer (AMOS) and stole cryptocurrency credentials, this skill provides pre-installation security analysis of skills before they're added to your workspace.

Use this skill when:

• About to install a new skill from ClawHub
• Investigating suspicious skill behavior
• Performing security due diligence on community skills
• Auditing your currently installed skills
• User requests security vetting of a skill

This skill does NOT replace:

• VirusTotal scanning (complementary)
• Manual code review (recommended for critical use)
• Your own security judgment

Core Capabilities

1. Malicious Pattern Detection

Scans for known malicious patterns from the ClawHavoc campaign:

• Fake prerequisite installations (openclaw-agent.zip, openclaw-setup.exe)
• Suspicious download commands in SKILL.md
• Hidden payload execution in metadata
• Social engineering language patterns
• Unauthorized external binary downloads

2. Credential Leak Analysis

Identifies potential credential exposure vectors:

• Hardcoded API keys, tokens, passwords in SKILL.md
• Suspicious environment variable exfiltration
• Unencrypted sensitive data transmission
• Overly broad permission requests
• Credential harvesting patterns

3. Dependency Chain Validation

Analyzes skill dependencies for:

• Unverified binary requirements
• Suspicious GitHub repository sources
• External script execution
• Network connections to unknown hosts
• Nested dependency exploitation

4. C2 Infrastructure Detection

Checks for Command & Control indicators:

• Known malicious IP addresses (e.g., 91.92.242.30 from ClawHavoc)
• Suspicious domain patterns
• Encoded communication endpoints
• Data exfiltration channels
• Beaconing behavior patterns

5. SKILL.md Structure Validation

Verifies skill integrity:

• Proper YAML frontmatter structure
• Metadata consistency
• Description clarity vs actual behavior
• Permission justification
• Author verification (GitHub account age)

Security Scoring System

Each analyzed skill receives a Risk Score (0-100):

• 0-20: ✅ SAFE - No significant security concerns
• 21-40: ⚠️ LOW RISK - Minor concerns, proceed with caution
• 41-60: 🟡 MEDIUM RISK - Multiple red flags, manual review recommended
• 61-80: 🔴 HIGH RISK - Serious concerns, do NOT install without expert review
• 81-100: ☠️ CRITICAL - Malicious indicators detected, AVOID installation

Usage Instructions

Audit a Skill from ClawHub

When the user wants to install a skill, ALWAYS run this audit first:

# Fetch the skill from ClawHub
curl -s "https://clawhub.ai/api/skills/{skill-slug}/latest" > /tmp/skill-audit.json

# Extract SKILL.md content
jq -r '.content' /tmp/skill-audit.json > /tmp/skill.md

# Run security analysis
openclaw analyze-skill /tmp/skill.md

Audit Local Installed Skills

# Audit all skills in workspace
for skill in ~/.openclaw/skills/*/SKILL.md; do
  echo "Auditing: $(basename $(dirname $skill))"
  openclaw analyze-skill "$skill"
done

Quick Security Check

# Fast malicious pattern scan
grep -E "(openclaw-agent\.zip|openclaw-setup\.exe|91\.92\.242\.30)" /tmp/skill.md

Detection Heuristics

🚨 CRITICAL Red Flags (Auto-fail)

1. Fake Prerequisites Section

   • Matches: "Prerequisites", "Setup Required", "Installation Steps"
   • Contains: Download links to .zip, .exe, .dmg files
   • Example: "Download openclaw-agent.zip from https://..."

2. Known Malicious Infrastructure

   • IP: 91.92.242.30 (ClawHavoc C2)
   • Domains: Newly registered or suspicious TLDs
   • Encoded URLs or base64 obfuscation

3. Credential Harvesting

   • Regex patterns for API keys: (api[_-]?key|token|password)\s*[:=]\s*['\"][^'\"]+['\"]
   • SSH key access requests
   • Wallet private key patterns

4. Unauthorized Code Execution

   • curl | bash or wget | sh patterns
   • Hidden base64 encoded commands
   • Dynamic eval() or exec() on external input

⚠️ Warning Indicators (Score increase)

1. Suspicious Dependencies

   • Binary requirements without clear justification
   • Dependencies from unverified sources
   • Excessive permission requests

2. Obfuscation Techniques

   • Heavily encoded strings in metadata
   • Minified or obfuscated JavaScript/Python
   • Redirect chains in URLs

3. Social Engineering Language

   • Urgency phrases: "Install immediately", "Limited time"
   • Authority claims: "Official OpenClaw", "Verified by Anthropic"
   • Fear tactics: "Your system is at risk without this"

✅ Positive Security Indicators

1. Verified Author

   • GitHub account > 1 year old
   • Multiple well-rated skills
   • Active community engagement

2. Transparent Dependencies

   • Clear binary requirements with official sources
   • Open-source tool dependencies
   • Well-documented permission needs

3. Code Quality

   • Clean, readable SKILL.md
   • Proper error handling
   • No unnecessary network calls

Audit Report Format

## Security Audit Report
**Skill**: {skill-name}
**Author**: {author}
**Version**: {version}
**Audit Date**: {date}

### Risk Score: {score}/100 - {RISK_LEVEL}

### Critical Findings:
- {finding 1}
- {finding 2}

### Warning Indicators:
- {warning 1}
- {warning 2}

### Positive Indicators:
- {positive 1}
- {positive 2}

### Recommendations:
{INSTALL | DO NOT INSTALL | REVIEW MANUALLY}

### Detailed Analysis:
{Deep dive into specific concerns}

### VirusTotal Link:
{If available from ClawHub}

Integration with VirusTotal

If the skill has been scanned by VirusTotal (OpenClaw's new partnership):

# Check VirusTotal report via ClawHub
curl -s "https://clawhub.ai/api/skills/{skill-slug}/virustotal" | jq

Always recommend users check both this audit AND VirusTotal before installation.

Example Workflow

User: "I want to install the solana-wallet-tracker skill"

OpenClaw with Security Auditor:

1. ✋ "Hold on, let me run a security audit first..."
2. 🔍 Fetches skill from ClawHub
3. 🛡️ Runs malicious pattern detection
4. 📊 Generates risk score and report
5. ⚠️ Alert: "HIGH RISK DETECTED - This skill contains fake prerequisites requesting download of 'openclaw-agent.zip' from an untrusted source. This matches the ClawHavoc malware campaign pattern. DO NOT INSTALL."
6. 🔗 Provides VirusTotal link for cross-reference
7. ✅ Suggests safe alternative skills if available

Advanced Features

1. Behavioral Analysis (Future Enhancement)

• Sandbox execution monitoring
• Network traffic analysis
• File system access patterns

2. Community Threat Intelligence

• Share malicious skill signatures
• Collaborative IOC database
• Reputation scoring system

3. Continuous Monitoring

• Auto-audit skills on updates
• Alert on new security advisories
• Periodic re-scanning of installed skills

False Positive Mitigation

To minimize false positives:

1. Contextual Analysis: Binary requirements for legitimate tools (e.g., gh for GitHub CLI) are validated against known safe sources
2. Whitelisting: Verified authors and established skills get trust bonuses
3. Human Review Option: Always provide detailed reasoning for security decisions
4. Appeal Process: Users can report false positives for skill reputation adjustment

Compliance & Ethics

This skill:

• ✅ Analyzes publicly available skill metadata
• ✅ Protects user security and privacy
• ✅ Promotes responsible skill development
• ❌ Does NOT perform unauthorized access
• ❌ Does NOT guarantee 100% security (nothing does)
• ❌ Does NOT replace user judgment

Response Templates

Safe Skill

✅ Security Audit Complete

{skill-name} has been analyzed and appears SAFE to install.

Risk Score: {score}/100 (LOW)

No malicious patterns detected. The skill:
- Uses standard dependencies from trusted sources
- Has a verified author with {X} published skills
- Contains clear documentation with no obfuscation
- Requests appropriate permissions for its function

VirusTotal: {link}

Recommendation: Safe to proceed with installation.

Suspicious Skill

🔴 Security Alert: HIGH RISK DETECTED

{skill-name} has been flagged with CRITICAL security concerns.

Risk Score: {score}/100 (HIGH)

⚠️ Critical Findings:
{detailed findings}

This skill matches patterns from the ClawHavoc malware campaign.

Recommendation: DO NOT INSTALL. Consider reporting this skill to ClawHub moderators.

Alternative safe skills: {suggestions}

Technical Implementation Notes

Pattern Database Location: ~/.openclaw/security-auditor/patterns/

• malicious-patterns.json: Known bad indicators
• safe-patterns.json: Whitelisted elements
• ioc-database.json: Indicators of Compromise

Update Mechanism:

# Pull latest threat intelligence
curl -s "https://openclaw-security.github.io/threat-intel/latest.json" \
  > ~/.openclaw/security-auditor/patterns/ioc-database.json

Contributing

Found a new malicious pattern? Submit IOCs to the OpenClaw Security Working Group:

• GitHub: github.com/openclaw/security-auditor
• Report Format: JSON with pattern regex, description, severity

Limitations

⚠️ Important Disclaimers:

• This tool provides analysis, not guarantees
• Sophisticated malware may evade detection
• Always combine with VirusTotal + manual review for critical applications
• Security is a shared responsibility
• No automated tool replaces security expertise

References

• ClawHavoc Campaign Analysis: [The Hacker News, Feb 2026]
• OpenClaw Security Partnership: VirusTotal Integration
• Malicious Skill Database: OpenSourceMalware Research
• ClawHub Moderation Guide: docs.openclaw.ai/security

Remember: The best security is defense in depth. Use this skill as ONE layer of your security strategy, not the only layer.

Stay safe, stay skeptical, stay secure. 🦞🛡️