MAL-2026-13828

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ms_aidc_com_tw/MAL-2026-13828.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13828
Aliases
  • GHSA-2fg7-gfq8-c24g
Published
2026-08-12T10:29:52Z
Modified
2026-08-12T13:00:23.614296657Z
Summary
Malicious code in ms_aidc_com_tw (npm)
Details

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

Source: amazon-inspector (b12bdd45f103beeee602be82a07277a3f0cb842ec3a9829e904911fe37bd2fd5)

The package ms_aidc_com_tw ships only an index.html that renders a fake Cloudflare Turnstile 'security verification' page. On Turnstile completion, heavily obfuscated JavaScript (obfuscator.io-style rotating string array _0x59f1, RC4/base64 decoder _0x2020, self-defending anti-debug checks) assembles a URL to login.microsoftonline.com, copies the current page's query-string parameters onto it, and calls window.location.replace to hand the victim off to Microsoft's real login with attacker-controlled parameters preserved — the standard adversary-in-the-middle / OAuth-consent phishing relay pattern. The package name impersonates a Microsoft-branded Taiwanese corporate domain (ms.aidc.com.tw). The obfuscation exists solely to conceal the phishing destination and the parameter-relay logic from casual review. The npm registry is being abused as hosting infrastructure for a Microsoft 365 credential-harvesting landing page.

Source: ghsa-malware (926b2f1c75043aede24fbf0e72194caddfa40433659e3891da83fdd7c7eac8b7)

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": [
        {
            "modified_time": "2026-08-12T10:29:53Z",
            "id": "GHSA-2fg7-gfq8-c24g",
            "sha256": "926b2f1c75043aede24fbf0e72194caddfa40433659e3891da83fdd7c7eac8b7",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "import_time": "2026-08-12T10:39:02.364646486Z"
        },
        {
            "import_time": "2026-08-12T12:51:49.387609496Z",
            "modified_time": "2026-08-12T12:36:54Z",
            "id": "IN-MAL-2026-017546",
            "sha256": "b12bdd45f103beeee602be82a07277a3f0cb842ec3a9829e904911fe37bd2fd5",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ms_aidc_com_tw

Package

Name
ms_aidc_com_tw
View open source insights on deps.dev
Purl
pkg:npm/ms_aidc_com_tw

Affected ranges

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

Affected versions

1.*
1.0.0

Database specific

indicators 
{
    "evidence_files": [
        {
            "path": "index.html",
            "tlsh": "78c2c61073c13dd011579b767b1bf6d4dd285a9a3a89889bf01c7d88eb9ac4cead0a70",
            "sha256": "9ab03d54a240f626da36df97cd9439eaa2cb8c55cbaa2eb929c3f48444d7d6de"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ms_aidc_com_tw/MAL-2026-13828.json"