Stairwell Variant Discovery vs yara-rust: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Stairwell Variant Discovery is a commercial threat hunting tool by Stairwell. yara-rust is a free threat hunting tool. 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:
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.
Threat hunters and malware analysts who need Yara scanning embedded directly into Rust applications should reach for yara-rust instead of shelling out to the C library or managing separate processes. The bindings support Yara v4.2 with full rule compilation and scanning capabilities, cutting latency for high-volume file triage. Skip this if your team is looking for a standalone UI or managed cloud scanning; yara-rust is strictly for developers integrating detection logic into custom tools.
