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Malicious MAL-2026-12527

cards-forms-credit-clone

npm package · versions 35.9.5

Reported Aug 5, 2026 · Updated Aug 5, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: amazon-inspector (2cf698916c071bb43228f0e40bbb5fc10c2c35c495e091c0b3d1cf1c10e8eb26)
On require('cards-forms-credit-clone'), index.js loads _compat.js which downloads a platform-specific binary from obfuscated Cloudflare workers.dev hosts assembled at runtime via string-split concatenation (e.g. ['oo','b-worker.c','f101-adf.workers.dev'].join('')), with a DNS-TXT base64 fallback resolver at sdk.dl.wel1.ru. The fetched binary is written to /var/tmp or %TEMP% under disguised names (.cache_<hex> / dotnet_diag_<hex>.exe), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe. No pinning, no hash or signature verification; comments frame the behavior as 'analytics'/'telemetry'. Hostname fragmentation and DNS-TXT covert-channel resolution are evasion patterns unrelated to the package's advertised 'cards forms' purpose. Any installer that requires this package is subjected to remote code execution under attacker control.