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Signature-Base is a free threat hunting tool. Stairwell Variant Discovery is a commercial threat hunting tool by Stairwell. Compare features, ratings, integrations, and community reviews side by side to find the best threat hunting fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Threat hunters and SOC analysts running LOKI or THOR Lite scanners should use Signature-Base for its curated YARA rules and IOC database that requires zero tuning before deployment. With 2,885 GitHub stars and active community contributions, the rulesets catch real malware variants without the false positive noise that plagues generic public signature repos. Skip this if your team needs signature management across multiple scanner vendors; Signature-Base is purpose-built for the THOR ecosystem and won't reduce your operational overhead elsewhere.
Mid-market and enterprise threat hunters who need to move beyond hash-based detection will find real value in Stairwell Variant Discovery's structural analysis engine, which expands a single malware indicator into full family visibility without requiring YARA authoring. The tool's retroactive reanalysis across your entire historical file corpus means you can surface dormant variants the moment new threat intelligence arrives, directly strengthening your DE.AE and RS.AN capabilities. Skip this if your team lacks the analyst bandwidth to operationalize variant intelligence or if you need to pivot quickly to containment and eradication; Stairwell prioritizes discovery and forensics over automated response workflows.
YARA signature and IOC database for LOKI and THOR Lite scanners with high quality rules and IOCs.
Expands a single malware hash into full family visibility via structural analysis.
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Common questions about comparing Signature-Base vs Stairwell Variant Discovery for your threat hunting needs.
Signature-Base: YARA signature and IOC database for LOKI and THOR Lite scanners with high quality rules and IOCs..
Stairwell Variant Discovery: Expands a single malware hash into full family visibility via structural analysis. built by Stairwell. headquartered in United States. Core capabilities include Structural similarity analysis to identify malware variants beyond hash-based detection, Private encrypted file vault storing all executables, scripts, and artifacts with no expiration, Malware family tree mapping showing variant evolution, host propagation, and time windows..
Both serve the Threat Hunting market but differ in approach, feature depth, and target audience.
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