MAL-2026-12375

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/evo-web-base-analytics-data/MAL-2026-12375.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12375
Aliases
  • GHSA-qcvh-54j6-qmcr
Published
2026-08-05T12:46:44Z
Modified
2026-08-06T01:21:03.029826061Z
Summary
Malicious code in evo-web-base-analytics-data (npm)
Details

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

Source: amazon-inspector (01a5ea39e9c916ea6155783b98eeb71551a8a7966edad05852816786e902ac92)

On require, index.js auto-loads support.js which reassembles download hosts at runtime from string fragments (e.g. Cloudflare Workers subdomains under workers.dev and *.dl.well1.site), fetches a platform-specific binary over HTTPS with a DNS-TXT base64 fallback channel, writes it to /tmp or the Windows Temp directory under disguised names (.cache<hex>, dotnetdiag<hex>.exe), chmods it to 0755, and spawns it detached via /bin/sh -c or cmd.exe. The download host literals are split and joined via Array.join('') to defeat static inspection. The DNS-TXT fallback queries c.<domain> and numbered subdomains and base64-decodes concatenated TXT records into an executable payload, providing a covert transport that bypasses HTTP egress filtering.

Source: ghsa-malware (bc10e680bf1115a2a78b677e234885879de2d062f957b3e79edb43f5ceae2177)

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": [
        {
            "import_time": "2026-08-05T13:08:44.182332256Z",
            "modified_time": "2026-08-05T12:46:44Z",
            "sha256": "01a5ea39e9c916ea6155783b98eeb71551a8a7966edad05852816786e902ac92",
            "id": "IN-MAL-2026-014757",
            "versions": [
                "20.1.5"
            ],
            "source": "amazon-inspector"
        },
        {
            "import_time": "2026-08-06T00:58:53.435496154Z",
            "sha256": "bc10e680bf1115a2a78b677e234885879de2d062f957b3e79edb43f5ceae2177",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-qcvh-54j6-qmcr",
            "modified_time": "2026-08-05T18:42:42Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / evo-web-base-analytics-data

Package

Name
evo-web-base-analytics-data
View open source insights on deps.dev
Purl
pkg:npm/evo-web-base-analytics-data

Affected ranges

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

Affected versions

20.*
20.1.5

Database specific

cwes
[
    {
        "name": "Embedded Malicious Code",
        "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."
    }
]
indicators
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-BEjbaU3tys2SPzQlia2kztP+AWbrkkVTHne2RealifsjN9W6sjK80oWOnsGXPyy+J0cXVEt+GP/XKpDB6qcVcg==",
                "sha1": "e386111c528aeec7339de5dd11573150fc849b0f"
            },
            "filename": "evo-web-base-analytics-data-20.1.5.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_support.js",
            "sha256": "51d1b42167a70289dbfa7b187eb340db99572cbfe06a2534502dedb6bd1bbac0",
            "tlsh": "05b1b6aa16aa71188bb0e7e48713581af656f56337408694f79ca5841f72134c3b2efc"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/evo-web-base-analytics-data/MAL-2026-12375.json"