base64_substring vs YARA Public YARA rules: 2026 Comparison
base64_substring is a free threat hunting tool. YARA Public YARA rules 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 available product data, here is our conclusion:
Threat hunters who need to catch obfuscated malware samples will appreciate base64_substring's narrow focus: it generates YARA rules that account for base64's encoding variations, eliminating the manual work of writing rules that actually match what malware authors deploy. The tool is free and already battle-tested across 40 GitHub stars worth of security teams. This is not for buyers looking for a general YARA rule generator or those who need automation across multiple obfuscation techniques; base64_substring solves one problem exceptionally well and stays out of your way otherwise.
Threat hunters and malware analysts who need fast, portable detection rules should start with YARA Public YARA rules; the community maintains thousands of rules freely available on GitHub, letting you test patterns against samples without licensing friction. The repository's active contributor base means you get rules for emerging malware families weeks faster than waiting for vendor signatures. Skip this if your team lacks in-house reverse engineering skills or expects a managed feed with confidence scoring and false-positive tuning; YARA rules require interpretation and integration work that raw detection logic alone won't solve.
