MAL-2026-12243

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## Source: amazon-inspector (d549ceada3b5ffb1d4affe80caa58597b04df716893d876f88193c1c7a81317f) On require of the package's main entry, _vendor.js downloads a platform-specific executable from anonymous Cloudflare Workers hosts under oob-worker.cfNNN-XXX.workers.dev (host strings assembled via split-and-join fragments to evade static analysis) and, on failure, reassembles a base64-encoded payload from sequential DNS TXT record lookups against subdomains of *.dl.well1.site (tin.dl.well1.site, ldr.dl.well1.site). The fetched bytes are written to /var/tmp or %TEMP% under disguised names (.cache_<hex>, dotnet_diag_<hex>.exe,.analytics_state), chmod 0755, then spawned detached via `spawn('/bin/sh', ['-c', '<fp> &'])` on Unix or `spawn('cmd', ['/c','start','/b',...])` on Windows. There is no version pinning, no hash or signature verification, and comments frame the behavior as 'telemetry/analytics' unrelated to the package's advertised Tinkoff SDK prefill purpose. The DNS-TXT reassembly path is a covert delivery channel designed to bypass HTTPS egress filtering.