Stairwell Variant Discovery vs YAYA - Yet Another Yara Automaton: Side-by-Side Comparison (2026)

Stairwell Variant Discovery: Expands a single malware hash into full family visibility via structural analysis. built by Stairwell. 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..

YAYA - Yet Another Yara Automaton: Automatically curate open-source Yara rules and run scans with YAYA..

Both serve the Threat Hunting market but differ in approach, feature depth, and target audience.

Stairwell Variant Discovery is developed by Stairwell. YAYA - Yet Another Yara Automaton is open-source with 302 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Stairwell Variant Discovery and YAYA - Yet Another Yara Automaton serve similar Threat Hunting use cases: both are Threat Hunting tools, both cover YARA. Key differences: Stairwell Variant Discovery is Commercial while YAYA - Yet Another Yara Automaton is Free, YAYA - Yet Another Yara Automaton is open-source. Review the feature comparison above to determine which fits your requirements.