MAL-2026-12978

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-anchor-title/MAL-2026-12978.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12978
Published
2026-08-05T14:40:48Z
Modified
2026-08-05T15:51:25.306435975Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-anchor-title (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (333f50949b082f2782be370d736513e8f5165fd3b6abea7d887a7bc73eacea9c)

On require() of the package's main entry, index.js loads platform.js which fetches a platform-specific binary from Cloudflare Workers hostnames (oob-worker.cf*.workers.dev) reconstructed via.join('') from split string fragments, with a DNS-TXT record fallback channel (c.<domain> count + numbered TXT records reassembled from base64) pointing at *.dl.wel1.ru to bypass HTTP egress filtering. The fetched bytes are written to /var/tmp or %TEMP% under cover-story names (dotnetdiag<rand>.exe on Windows,.cache<rand> on Unix), chmod 0755 on Unix, and spawned detached via spawn('/bin/sh',...) or spawn('cmd', ['/c', 'start',...]). A TTL marker file suppresses re-runs. Hosts are not publisher-controlled, unrelated to any documented package purpose, and no hash/signature verification is performed. A second dropper variant with the same shape is present in lib/telemetry.js wrapped as a fake analytics SDK; it is not reachable from index.js in this version.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "333f50949b082f2782be370d736513e8f5165fd3b6abea7d887a7bc73eacea9c",
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T14:40:48Z",
            "versions": [
                "35.8.3"
            ],
            "import_time": "2026-08-05T15:19:49.187766279Z",
            "id": "IN-MAL-2026-015397"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-anchor-title

Package

Name
bnpl-blocks-mobile-bnpl-anchor-title
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-mobile-bnpl-anchor-title

Affected ranges

Affected versions

35.*
35.8.3

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "91c284991e5390157371db050cf093a09ace7646",
                "sha512_sri": "sha512-rB+AhUdercCF7PuHmeiSCAJUUCZLAQjxScLSp1/5fI2YyQA4WT5gSdOW2l1N+Bnt0qUeXuxIA0Hu+P8MBb7nEg=="
            },
            "filename": "bnpl-blocks-mobile-bnpl-anchor-title-35.8.3.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_platform.js",
            "sha256": "53471bada512c4ce077721c9531e38017c5eb9af6320c22afb8a0359c48758cd",
            "tlsh": "f9a1749a166671188b709be4c71b4416f65bf6633380c684f79c68985fb352483b2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "b049cca64ae26ceee79c9769956d313b67834ee08329d4e00105dcc8582881f2",
            "tlsh": "c0835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-anchor-title/MAL-2026-12978.json"