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Enter a hash above and click "Lookup Hash" to check against the malware database.
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Our security team provides comprehensive threat intelligence, malware analysis, incident response, and proactive threat hunting. We help you detect, analyze, and respond to cyber threats before they impact your business.
Understanding File Hashes
MD5 (128-bit)
32-character hexadecimal string. Fast to compute but cryptographically broken. Still widely used for malware identification despite collision vulnerabilities.
SHA-1 (160-bit)
40-character hexadecimal string. Better than MD5 but also considered weak. Common in legacy systems and Git version control.
SHA-256 (256-bit)
64-character hexadecimal string. Industry standard for security. Cryptographically strong, resistant to collisions. Recommended for malware analysis.
Malware Analysis Workflow
- 1.Calculate file hash: Use tools like md5sum, sha256sum (Linux/Mac) or CertUtil (Windows) to compute the hash of a suspicious file without opening it.
- 2.Look up hash: Search malware databases (VirusTotal, MalwareBazaar, etc.) to check if the hash matches known malware. This is safe and doesn\'t require executing the file.
- 3.Interpret results: Check detection ratio (e.g., 45/70 means 45 of 70 antivirus engines flagged it), malware family name, and first seen date.
- 4.Take action: If malware is confirmed, quarantine the file, scan the system, check for lateral movement, and investigate how it entered your environment.
Threat Intelligence Use Cases
Incident Response
When investigating security incidents, hash lookups help quickly identify known malware without executing potentially dangerous files. This speeds up triage and helps determine if an incident is part of a known campaign.
Email Security
Hash lookup attachment files before allowing them through email gateways. Instantly block known malware without needing to scan the file, reducing resource usage and improving response time.
File Integrity Monitoring
Monitor critical system files by comparing their hashes against known-good baselines. Any change triggers an alert. Cross-reference unexpected changes with malware databases to detect compromises.
Threat Hunting
Proactively search for indicators of compromise (IOCs) by hashing files across your environment and comparing them to threat feeds. Identify infections before they cause damage.
Frequently Asked Questions
Common questions about the Hash Lookup
A hash lookup checks if a file hash (MD5, SHA-1, SHA-256) matches known malware signatures in databases like VirusTotal. Security analysts use this to quickly identify malicious files without executing them. If a hash matches a known malware sample, you know the file is dangerous.
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⚠️ Security Notice
This tool is provided for educational and authorized security testing purposes only. Always ensure you have proper authorization before testing any systems or networks you do not own. Unauthorized access or security testing may be illegal in your jurisdiction. All processing happens client-side in your browser - no data is sent to our servers.