File Hash Reputation MD5, SHA1, and SHA256 malware hash lookup
Check a file hash before it becomes a manual investigation bottleneck. Enrich MD5, SHA1, and SHA256 indicators with reputation, malware context, related infrastructure, and API-ready evidence for SOC queues and incident response.
No credit card required · Free API key
- verdict
- malicious · 35 / 89 sources
- country
- DE · AS60729
- confidence
- 0.75
- latency
- 47 ms · cache HIT
MD0
Legacy Hashes
SHA0
Detection Rules
SHA0
Modern IOCs
Bulk
SOC Enrichment
Key features. Everything you need to protect your infrastructure and users.
Hash Reputation Verdicts
Classify known malware hashes with confidence context instead of stopping at a raw indicator match.
Related Infrastructure
Pivot from a suspicious hash to related domains, URLs, IPs, and campaign context when available.
Bulk IOC Enrichment
Process hashes alongside IPs, domains, and URLs in batch workflows for SIEM and SOAR queues.
Incident Response Context
Attach source evidence, threat categories, and recommended next checks to analyst reports.
API-First Workflow
Use REST endpoints, SDKs, and OpenAPI tooling to integrate hash checks into existing pipelines.
No File Upload Required
Check known file fingerprints without transferring sensitive samples outside your environment.
Use cases. How security teams use this tool.
EDR Alert Enrichment
Enrich file hashes from endpoint alerts before escalating to Tier 2 analysts.
SIEM and SOAR Automation
Batch-check hash indicators with domains, IPs, and URLs during triage playbooks.
Malware Investigation
Prioritize samples by known reputation and pivot to related infrastructure.
Trust and Safety Review
Screen submitted file fingerprints without uploading user content.
What is file hash reputation?
File hash reputation is the process of checking a cryptographic fingerprint, usually MD5, SHA1, or SHA256, against threat intelligence sources. A match can indicate known malware, suspicious tooling, or a file previously observed in malicious campaigns. Hash reputation is fastest when used as an enrichment signal, not as the only decision point.
How to use hash reputation in SOC workflows
Hash lookups are most valuable when they are automated. Extract hashes from EDR alerts, email attachments, SIEM events, or sandbox output; query reputation in bulk; then enrich the case with related domains, URLs, IPs, source evidence, and confidence levels. Unknown hashes should remain triage items, not automatic allow decisions.
Hash checks vs malware sandboxing
A hash reputation lookup answers whether a fingerprint is already known. A sandbox executes or detonates a file to observe behavior. Use reputation checks for speed, deduplication, and first-pass triage; use sandboxing when the file is unknown, polymorphic, packed, or requires behavioral analysis.
API-first IOC enrichment
The same workflow used for file hash reputation can enrich IPs, domains, and URLs. This makes it easier to build a single IOC enrichment pipeline for alerts, tickets, and detection engineering instead of maintaining separate tools for each indicator type.
Frequently asked questions.
Which file hash formats are supported?
Is this a file upload sandbox?
How should SOC teams use hash reputation?
Can I check hashes through the API?
Related articles. Learn more from our security research blog.
Ready to get started?
Rejoignez des milliers d'équipes de sécurité qui utilisent isMalicious pour protéger leur infrastructure.
No credit card required · Free API key