{"id":"MAL-2026-13658","summary":"Malicious code in sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7c602d22e5a0f1d7cee18a98a7ce0b67e2c8440f7ff95330cb6c33d169f2e629)\nOn require() of the package, index.js loads _support.js and lib/telemetry.js, both of which reconstruct the identifier 'child_process' and destination hostnames from split string fragments (e.g. [\"oob-worker.cf102\",\"-baf.work\",\"ers.d\",\"ev\"].join(\"\")) to evade static analysis. The code selects an OS-specific path, downloads a binary from one of four Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), writes it to /var/tmp or %TEMP% under a hidden/dotnet_diag-style name, chmod 0755 on POSIX, and spawns it detached via /bin/sh -c or cmd /c start with no hash or signature verification. When HTTPS mirrors fail, a DNS-TXT covert channel queries c.\u003cdomain\u003e for a chunk count and iterates 0.\u003cdomain\u003e..N.\u003cdomain\u003e under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru, concatenates the TXT chunks, base64-decodes them into a binary, writes it to disk and spawns it. lib/telemetry.js (the main entry) contains a parallel dropper path with the same fetch/base64-decode/chmod/spawn shape. Cover-story comments (\"Initialize runtime analytics\", \"Detached process to avoid blocking npm install\") and DISABLE_TELEMETRY/DO_NOT_TRACK env checks are wrapped around the dropper to masquerade as legitimate telemetry.\n","modified":"2026-08-08T01:04:52.344162831Z","published":"2026-08-08T00:44:47Z","database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","versions":["35.8.1"],"id":"IN-MAL-2026-017148","import_time":"2026-08-08T00:53:06.947161264Z","modified_time":"2026-08-08T00:44:47Z","sha256":"7c602d22e5a0f1d7cee18a98a7ce0b67e2c8440f7ff95330cb6c33d169f2e629"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models/v/35.8.1"}],"affected":[{"package":{"name":"sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models","ecosystem":"npm","purl":"pkg:npm/sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models"},"versions":["35.8.1"],"database_specific":{"cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}],"indicators":{"evidence_files":[{"sha256":"a4ac309f785f62a807e54ec62cc874bcdb7561fead288080aeda9323f2c1406e","tlsh":"85a1950a16fa30180793e1d8851f5816719af99333c0d9c4fb4c66985fa617983f39fd","path":"_support.js"},{"path":"lib/telemetry.js","sha256":"797ba9a2585ddde48e0692dc4929192811dba8a69bd4245e4b01bda5f1f7e3b1","tlsh":"4373304966fb10214263b0685fab40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"}],"package_integrity":[{"filename":"sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models-35.8.1.tgz","hashes":{"sha1":"ab66955c33c29e84539a01a22b9a4dbc6826ad19","sha512_sri":"sha512-STerebb767D+tZcS/O2UbFBiVB8IzOHJif/YxO3Zjw6cmo+5L0Pf4AjMXjYTHbaynG0Y3+x9RL3caSS2+1YInA=="}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-models/MAL-2026-13658.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}