mal-2026-13659
Vulnerability from ossf_malicious_packages
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f)
On require() of this package, index.js loads./loader.js which reconstructs C2 hostnames via array-join string concealment (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT-record payload channel fallback under *.dl.wel1.ru whose sequenced records are base64-decoded and concatenated. The loader fetches a platform-specific executable, writes it to /tmp or Windows Temp under a disguised name (.cache or dotnet_diag_.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe with unref(). A secondary duplicate path in lib/telemetry.js (re-exported by the main entry) uses concatenated identifier strings ('child_'+'process', 'chmod'+'Sync') to evade static scanners, base64-decodes chunks into an executable, chmods 755, and spawns via /bin/sh under an 'analytics-sdk' cover story. The package name mimics an internal corporate scope (sme-rko-finance-front-payments-currency-payment-domain) while being published unscoped and public on npm with a generic 'API client wrappers' description and empty author field, matching the shape of a dependency-confusion lure targeting a specific organization's private package name. Installing or importing this package results in full-host native code execution on the installer's machine from attacker-controlled infrastructure.
- 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": "_loader.js",
"sha256": "3993ab07327680ee3d9a8fc9dfb7f1deb86149bbcc9ab9768daaf0ce4c93acae",
"tlsh": "5ea1955a16fb30180793e6d8451f5816719ae68333c8d984ff4c66948fab12883b3afd"
},
{
"path": "lib/telemetry.js",
"sha256": "39763397d3d2783cb5a4762daeea1a6a9808b975259292487aabdff502539a83",
"tlsh": "61733f4966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
},
{
"path": "package.json",
"sha256": "9f1df86d8cef9b7c3b6633684bfb622cd0b4dcaeb67117bbf1f6dbc3f5f94e20",
"tlsh": "4ad0c2101ab26933a4c942290855926b6330ce2f1004780c13cf151c039e5b799fa32e"
}
],
"package_integrity": [
{
"filename": "sme-rko-finance-front-payments-currency-payment-domain-35.8.1.tgz",
"hashes": {
"sha1": "be957a31c0c75f359d7d22cc4eb4c2670a14e8b1",
"sha512_sri": "sha512-i2dNdbdJe2dFIjWQy351Kfsw+nZ5mBSG94HpWyUYXj5u+ks+HSjqGaS8X8AJIbH5d9IULmL4O0PQ2w19P1UycQ=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "sme-rko-finance-front-payments-currency-payment-domain"
},
"versions": [
"35.8.1"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-017163",
"import_time": "2026-08-08T00:53:07.95395224Z",
"modified_time": "2026-08-08T00:46:57Z",
"sha256": "20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f",
"source": "amazon-inspector",
"versions": [
"35.8.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f)\nOn require() of this package, index.js loads./_loader.js which reconstructs C2 hostnames via array-join string concealment (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT-record payload channel fallback under *.dl.wel1.ru whose sequenced records are base64-decoded and concatenated. The loader fetches a platform-specific executable, writes it to /tmp or Windows Temp under a disguised name (.cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe with unref(). A secondary duplicate path in lib/telemetry.js (re-exported by the main entry) uses concatenated identifier strings (\u0027child_\u0027+\u0027process\u0027, \u0027chmod\u0027+\u0027Sync\u0027) to evade static scanners, base64-decodes chunks into an executable, chmods 755, and spawns via /bin/sh under an \u0027analytics-sdk\u0027 cover story. The package name mimics an internal corporate scope (sme-rko-finance-front-payments-currency-payment-domain) while being published unscoped and public on npm with a generic \u0027API client wrappers\u0027 description and empty author field, matching the shape of a dependency-confusion lure targeting a specific organization\u0027s private package name. Installing or importing this package results in full-host native code execution on the installer\u0027s machine from attacker-controlled infrastructure.\n",
"id": "MAL-2026-13659",
"modified": "2026-08-08T00:46:57Z",
"published": "2026-08-08T00:46:57Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/sme-rko-finance-front-payments-currency-payment-domain/v/35.8.1"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in sme-rko-finance-front-payments-currency-payment-domain (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.