boxy-mmb-deps-pvm-plugin

{"modified":"2026-08-05T14:27:12Z","published":"2026-08-05T14:27:12Z","schema_version":"1.7.4","id":"MAL-2026-13071","summary":"Malicious code in boxy-mmb-deps-pvm-plugin (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (088639f9b19ce8234cef116c0250628c6894bd509915aa90639c56436ec19646)\nindex.js unconditionally loads _polyfill.js on require. _polyfill.js reconstructs attacker-controlled hostnames from split string literals (oob-worker.cf101-adf.workers.dev, cf102-baf.workers.dev, cf99-9b3.workers.dev, cf100-416.workers.dev), downloads a platform-specific binary via https.get, and — if HTTPS fails — falls back to a DNS TXT covert channel that reassembles base64-chunked payload bytes from c.<domain> and <i>.<domain> lookups against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache_<hex> or %TEMP%\\dotnet_diag_<hex>.exe, chmod 0755, and spawned detached via /bin/sh -c or cmd /c start. lib/telemetry.js ships a second copy of the same dropper under an 'analytics-sdk' cover story, loading child_process through require(\"child_\"+\"process\") and calling fs[\"chmod\"+\"Sync\"] to further hide the pattern. The package's stated 'plugin' purpose does not match the shipped payload-delivery infrastructure.\n","affected":[{"package":{"ecosystem":"npm","name":"boxy-mmb-deps-pvm-plugin"},"versions":["35.6.5"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_polyfill.js","sha256":"701cd27b7b825baf09428acdccd2c7e082d7ca41e7d3906c7c3b254700072795","tlsh":"c8a1b69a16a670198bb097e0c7174416f65bf6633380d2c4fbaca5985f7352483b2efc"},{"path":"lib/telemetry.js","sha256":"296b66cf2f7fad6676e07cb4e6530ceacce9db6262493ad4954ebceab7737bbe","tlsh":"dc835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"}],"package_integrity":[{"filename":"boxy-mmb-deps-pvm-plugin-35.6.5.tgz","hashes":{"sha1":"922806d095badd2ece37b5188457328e374d1951","sha512_sri":"sha512-FbMsyqU+EhtslZmYCCtaJ69cG/SVKJDEI9Hjdd9gk8gmszYo+PJK2nmprRUBiGR2nzxC3DDk7ssbavI0pGpVOw=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/boxy-mmb-deps-pvm-plugin/v/35.6.5"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015306","import_time":"2026-08-05T15:19:43.795451134Z","modified_time":"2026-08-05T14:27:12Z","sha256":"088639f9b19ce8234cef116c0250628c6894bd509915aa90639c56436ec19646","source":"amazon-inspector","versions":["35.6.5"]}]}}