mal-2026-13661
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (05877cb287448f82b3b8a223454971cbd881ff8667e597472c04123697295220)
The package is advertised as a finance/payments adapter but on require() reaches a staged loader. _adapter.js reconstructs destination hostnames from split array literals (e.g., ['oob-worker.','cf101-adf.workers.d','ev'].join('')) to hide oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, and oob-worker.cf99-9b3.workers.dev, with a DNS TXT chunked-fallback channel to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. A platform-specific asset (/pkg/package, /pkg/package.exe, or /pkg/package_mac) is downloaded, written to /var/tmp/.cache_<hex> or Windows TEMP dotnet_diag_<hex>.exe to masquerade as a system diagnostic, chmod 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}).unref(). A stamp file gates re-runs. The same fetch/decode/chmod/exec pattern is duplicated in lib/telemetry.js — the module exposed as index.js's public API — using require('child_' + 'process'), Buffer.from(chunks, 'base64'), and fs['chmod' + 'Sync'] to evade static string matching, ensuring the loader fires whether _adapter.js or telemetry.js is loaded first. The declared payments-adapter purpose is absent from the code; the package's only observable effect on require is dropping and executing an unsigned, unpinned remote binary.
- CWE-506 - The product contains code that appears to be malicious in nature.
{
"affected": [
{
"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": "_adapter.js",
"sha256": "f29b7d8188376d4dabb46542cca9ea412074e93bb2950d88b38012e37bd6b576",
"tlsh": "dba1945516fa30180392e5c4851fa816719af6937284d9d4fb4ca6885fdb278c3f3afc"
},
{
"path": "lib/telemetry.js",
"sha256": "76596f24830b23e050abcc145312bbb7330c86ed6f1803fcd96a5e6e1ab6a908",
"tlsh": "9f733f4966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
}
],
"package_integrity": [
{
"filename": "sme-rko-finance-front-payments-feed-adapter-35.8.1.tgz",
"hashes": {
"sha1": "587bacd1093c3ad8ab62dd1c166cdc138fc9d8f7",
"sha512_sri": "sha512-vbloSwbF9XqQTBiaamkzCfUWXO+BECVnnkHrOjOBVbbga8VYYMbLBnMoAqkixF/UXepAJM7Y4RNVW7DNLISyOA=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "sme-rko-finance-front-payments-feed-adapter"
},
"versions": [
"35.8.1"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-017164",
"import_time": "2026-08-08T00:53:08.009901883Z",
"modified_time": "2026-08-08T00:47:10Z",
"sha256": "05877cb287448f82b3b8a223454971cbd881ff8667e597472c04123697295220",
"source": "amazon-inspector",
"versions": [
"35.8.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (05877cb287448f82b3b8a223454971cbd881ff8667e597472c04123697295220)\nThe package is advertised as a finance/payments adapter but on require() reaches a staged loader. `_adapter.js` reconstructs destination hostnames from split array literals (e.g., `[\u0027oob-worker.\u0027,\u0027cf101-adf.workers.d\u0027,\u0027ev\u0027].join(\u0027\u0027)`) to hide `oob-worker.cf101-adf.workers.dev`, `oob-worker.cf103-070.workers.dev`, `oob-worker.cf100-416.workers.dev`, and `oob-worker.cf99-9b3.workers.dev`, with a DNS TXT chunked-fallback channel to `sdk.dl.wel1.ru`, `ext.dl.wel1.ru`, `pkg.dl.wel1.ru`, and `net.dl.wel1.ru`. A platform-specific asset (`/pkg/package`, `/pkg/package.exe`, or `/pkg/package_mac`) is downloaded, written to `/var/tmp/.cache_\u003chex\u003e` or Windows TEMP `dotnet_diag_\u003chex\u003e.exe` to masquerade as a system diagnostic, chmod 0755, and spawned detached via `cp.spawn(\u0027/bin/sh\u0027, [\u0027-c\u0027, fp + \u0027 \u0026\u0027], {detached:true}).unref()`. A stamp file gates re-runs. The same fetch/decode/chmod/exec pattern is duplicated in `lib/telemetry.js` \u2014 the module exposed as `index.js`\u0027s public API \u2014 using `require(\u0027child_\u0027 + \u0027process\u0027)`, `Buffer.from(chunks, \u0027base64\u0027)`, and `fs[\u0027chmod\u0027 + \u0027Sync\u0027]` to evade static string matching, ensuring the loader fires whether `_adapter.js` or `telemetry.js` is loaded first. The declared payments-adapter purpose is absent from the code; the package\u0027s only observable effect on require is dropping and executing an unsigned, unpinned remote binary.\n",
"id": "MAL-2026-13661",
"modified": "2026-08-08T00:47:10Z",
"published": "2026-08-08T00:47:10Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/sme-rko-finance-front-payments-feed-adapter/v/35.8.1"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in sme-rko-finance-front-payments-feed-adapter (npm)"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.