{"id":"MAL-2026-13645","summary":"Malicious code in sme-rko-finance-front-operations-penalty (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6b92a10d396bb1914ec6de4aff1dbd6845b09bcc1087fa8b1c49cf455d33d887)\nOn require() of the package, _runtime.js and lib/telemetry.js reassemble Cloudflare Workers hostnames (oob-worker.cf103-07/cf99-9b3/cf100-416/cf101-adf.workers.dev) from split string arrays, fetch a platform-specific binary from /pkg/package[-arm64|.exe|loader_mac], write it to /var/tmp/.cache_\u003cuid\u003e on Unix or %TEMP%\\dotnet_diag_\u003cuid\u003e.exe on Windows, chmod 0755, and spawn it detached via /bin/sh -c or cmd.exe. A DNS TXT chunked-base64 fallback channel to *.dl.wel1.ru is used when HTTPS fails. Obfuscation techniques include string-split concatenation of host names, dynamic require(\"child_\" + \"process\"), bracket-notation fs[\"chmod\" + \"Sync\"], and disguised filenames masquerading as system diagnostics (dotnet_diag,.analytics_state,.cache_*). Both the auxiliary _runtime.js and the main entrypoint lib/telemetry.js reachable via index.js contain the dropper primitives, ensuring execution on import.\n","modified":"2026-08-08T01:04:46.277229828Z","published":"2026-08-08T00:43:34Z","database_specific":{"malicious-packages-origins":[{"import_time":"2026-08-08T00:53:06.279338557Z","modified_time":"2026-08-08T00:43:34Z","sha256":"6b92a10d396bb1914ec6de4aff1dbd6845b09bcc1087fa8b1c49cf455d33d887","source":"amazon-inspector","versions":["35.8.1"],"id":"IN-MAL-2026-017140"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/sme-rko-finance-front-operations-penalty/v/35.8.1"}],"affected":[{"package":{"name":"sme-rko-finance-front-operations-penalty","ecosystem":"npm","purl":"pkg:npm/sme-rko-finance-front-operations-penalty"},"versions":["35.8.1"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"indicators":{"evidence_files":[{"tlsh":"e5a1b6551afb301802a2e1c8851fa815719ee99337c4e994fb4c66884faa168c3b39fd","path":"_runtime.js","sha256":"44fcdf745c30882881590d814e0e73935e2e328edb99b4fb20e382b68be62c2a"},{"sha256":"a49ce96172003cc87f1c9b6f72f8eb6ed8afc4105e49b71d3f6da1c9d66a0ae2","tlsh":"1073304966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9","path":"lib/telemetry.js"}],"package_integrity":[{"filename":"sme-rko-finance-front-operations-penalty-35.8.1.tgz","hashes":{"sha1":"39dbc101dc6873024d582795ac7be26926152db7","sha512_sri":"sha512-AKKY94OZd4LaIB0Lm+CS3o29+TxvvnyGOp+/3D7CPoD62gEwdQhbwboRNQ3YTdd/s5YLzdW640L32NO386S3bA=="}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-operations-penalty/MAL-2026-13645.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}