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TunnelBuilders is a named threat actor referenced in threat-actor listings, but the available information does not provide corroborated detail on its operations, origin, targeting, tooling, or campaign history. There is insufficient high-confidence evidence to attribute specific malware families, victim sectors, geographic focus, capabilities, or motivations to this actor based on the supplied facts alone.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed as a threat actor associated in the report’s aggregated section with exploitation activity around React2Shell (CVE-2025-55182) and related RSC/Next.js vulnerabilities.
Named in an aggregated list of actors associated with React2Shell (CVE-2025-55182) exploitation activity.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.