Malicious code in bnpl-blocks-atom-bnpl-image-card (npm)
The npm package bnpl-blocks-atom-bnpl-image-card contains malicious code that downloads and executes platform-specific binaries from attacker-controlled Cloudflare Workers and DNS-TXT fallback infrastructure. The package masquerades as a UI component but performs unauthorized binary execution on installation.
- Disclosed
- Last updated
- Blast radius
- Any npm consumer of bnpl-blocks-atom-bnpl-image-card
- Ecosystems
- Attack vectors
- Affected entities
- bnpl-blocks-atom-bnpl-image-cardnpm package containing malicious code
The npm package bnpl-blocks-atom-bnpl-image-card was found to contain malicious code that executes on require(). The package's index.js loads _bridge.js, which fetches platform-specific binaries over HTTPS from attacker-controlled infrastructure.
The malicious behavior includes fetching binaries from Cloudflare Workers hostnames (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT chunked-download fallback against wel1.ru subdomains. The fetched binary is written to temporary directories (/var/tmp or %TEMP%) under disguised filenames (.cache_ or dotnet_diag_.exe) that mimic Microsoft diagnostics tools, made executable (chmod 0755), and spawned detached.
The package declares itself as a UI 'image card' component, which has no legitimate reason to fetch or execute native binaries. Evasion techniques include fragmenting destination hostnames into arrays and reassembling them with .join('') to bypass string-based detection, and performing no version pinning or hash verification on downloaded bytes.
The incident was identified by Amazon Inspector and credited to the OpenSSF malicious-packages project.
Indicators of compromise
- Domains
- oob-worker.cf102-baf.workers.dev
- oob-worker.cf100-416.workers.dev
- oob-worker.cf101-adf.workers.dev
- wel1.ru
Remediation
- Immediately remove bnpl-blocks-atom-bnpl-image-card from all projects and dependencies
- Audit npm package.json and lock files for any versions of bnpl-blocks-atom-bnpl-image-card
- Review node_modules for presence of the package and remove if found
- Check for suspicious processes or binaries in /var/tmp, %TEMP%, and other temporary directories on affected systems
- Monitor for outbound HTTPS connections to the identified Cloudflare Workers domains and wel1.ru subdomains
- Regenerate any credentials or secrets that may have been exposed on systems where the package was installed
- Update to a clean version of any legitimate UI component library if bnpl-blocks-atom-bnpl-image-card was a dependency
Sources
- GitHub Advisory GHSA-6qx2-33mx-7p7c · GitHub Advisory Database
Cite this entry
"Malicious code in bnpl-blocks-atom-bnpl-image-card (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 7, 2026; last updated August 7, 2026. https://supplychainattack.org/incident/malicious-code-in-bnpl-blocks-atom-bnpl-image-card-npm-1gnctn
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