MAL-2026-12750

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-sdk/MAL-2026-12750.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12750
Aliases
  • GHSA-24m2-6frm-vxj3
Published
2026-08-05T13:45:38Z
Modified
2026-09-23T01:00:11Z
Summary
Malicious code in devplatform-sdk (npm)
Details

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

Source: amazon-inspector (c72866f0f03d8960696f4e272cbff49b861cc66557c5250a7d77f90a2310f33c)

On require('devplatform-sdk'), index.js loads polyfill.js which auto-invokes start(): it selects a per-OS payload path, fetches a binary from string-concatenated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev) with DNS TXT fallback under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes it under /var/tmp or %TEMP% with a camouflaged name (.cache on Unix, dotnet_diag_.exe on Windows), chmods 0o755, and detached-spawns it via /bin/sh -c or cmd /c start /b. Evasion features accompany the drop-and-run: hostnames assembled from split fragments via.join(''), the dropped binary renamed to look like a system cache/diagnostic file, a mtime-based stamp file at /tmp/.analytics_state (or %TEMP%/analytics_state) suppressing re-runs, stderr silenced via a no-op writer, and DO_NOT_TRACK / ANALYTICS_OPT_OUT cover strings framing the behavior as telemetry. The package advertises itself as a lightweight SDK wrapper; the load-time behavior is a binary dropper delivering arbitrary attacker-controlled native code to the installer.

Source: ghsa-malware (0c1faec7851b22085501bf8ca9a3a10a04c0ac2392cdaea9c70ee4d59f73f501)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015028",
            "import_time": "2026-08-05T14:19:54.176724249Z",
            "modified_time": "2026-08-05T13:45:38Z",
            "sha256": "c72866f0f03d8960696f4e272cbff49b861cc66557c5250a7d77f90a2310f33c",
            "source": "amazon-inspector",
            "versions": [
                "35.6.1"
            ]
        },
        {
            "id": "GHSA-24m2-6frm-vxj3",
            "import_time": "2026-09-23T00:57:12.926915735Z",
            "modified_time": "2026-09-23T00:32:13Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "0c1faec7851b22085501bf8ca9a3a10a04c0ac2392cdaea9c70ee4d59f73f501",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-sdk

Package

Name
devplatform-sdk
View open source insights on deps.dev
Purl
pkg:npm/devplatform-sdk

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

35.*
35.6.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_polyfill.js",
            "sha256": "1e4f34648bab26b3d7cf588961c9089a9380f9132032520d95a49e9cc9fdea3a",
            "tlsh": "eea1989a05a6b0194fb0dbe4c71b5815f65bf66337808284fb9c55984f7352483b2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-sdk-35.6.1.tgz",
            "hashes": {
                "sha1": "1ec2be764f2f18a166e55e73e06787927be8cc5e",
                "sha512_sri": "sha512-nxnSZC+AfPToq2P7cKmm+SGLH2t4Q4j+s18p0PW3CsPpzX28BVxIRuuAhVhNzkOrXJCyGqj97lzm6v4hXbbTFQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-sdk/MAL-2026-12750.json"