MAL-2026-5763

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Import Source

https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/npm-sandbox-research-g3h4/MAL-2026-5763.json

JSON Data

https://api.osv.dev/v1/vulns/MAL-2026-5763

Aliases

GHSA-p2j4-q5x6-2gc4

Published

2026-06-14T07:30:43Z

Modified

2026-06-18T06:01:49.096828615Z

Summary

Malicious code in npm-sandbox-research-g3h4 (npm)

Details

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

Source: amazon-inspector (5e119a878730c42d27b9ec21adae1cbc6e044f1d6703c152010b5261647f1a3a)

On install, package.json's postinstall hook executes run.js. The package ships beacon15.js and beaconlinux.js, which import childprocess, os, and http and issue outbound HTTP requests carrying host identifiers. beacon_linux.js reads os.hostname() and os.platform() and POSTs them via http.request(); beacon15.js similarly issues GET/http.request() calls referencing host id fields. The combination of a lifecycle hook that runs on every install plus modules that collect host metadata and beacon it outbound matches an install-time host-exfiltration / C2 callback pattern with no legitimate documented purpose.

Source: ghsa-malware (230eb9f0568873797482b480cec1adf7f1e2687a6bbb3234c1f1c62167314434)

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": "2026-06-14T07:30:43Z",
            "id": "IN-MAL-2026-006459",
            "source": "amazon-inspector",
            "import_time": "2026-06-14T07:43:27.919292174Z",
            "sha256": "5e119a878730c42d27b9ec21adae1cbc6e044f1d6703c152010b5261647f1a3a",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "modified_time": "2026-06-14T07:30:43Z",
            "id": "IN-MAL-2026-006460",
            "source": "amazon-inspector",
            "import_time": "2026-06-14T07:43:27.965136848Z",
            "sha256": "6df6ab545cb5891153281962879a70b15df1e9e9fb6e404ca7c9dc33e773dfab",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-p2j4-q5x6-2gc4",
            "source": "ghsa-malware",
            "import_time": "2026-06-18T05:54:18.965488921Z",
            "sha256": "230eb9f0568873797482b480cec1adf7f1e2687a6bbb3234c1f1c62167314434",
            "modified_time": "2026-06-18T03:27:54Z"
        }
    ]
}

References

Credits

- Amazon Inspector - FINDER
- - inspector-research@amazon.com

Affected packages

npm / npm-sandbox-research-g3h4

Package

Name: npm-sandbox-research-g3h4; View open source insights on deps.dev
Purl: pkg:npm/npm-sandbox-research-g3h4

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.0

Database specific

indicators

{
    "ips": [
        "173.255.233.239",
        "10.1.0.2",
        "104.16.2.34",
        "104.16.7.34",
        "104.16.5.34"
    ],
    "package_integrity": [
        {
            "filename": "npm-sandbox-research-g3h4-1.0.0.tgz",
            "hashes": {
                "sha1": "71071e5c31050ddfe4f42d6abe24f9f0731c117c",
                "sha512_sri": "sha512-XxXz9st8vXy6jOyRjeTDcat/on9hh0T2MJttwBThTSaxvhAv76j+UPgJcnU1MtvRSAp8FsCvs29QEV3Nm7qE1Q=="
            }
        }
    ],
    "evidence_files": [
        {
            "path": "beacon15.js",
            "tlsh": "9602a515f2a46d90539294b8da4ab448242b921f7d21bde0b7cf06dc2fec65e92309fd",
            "sha256": "b15b7345d68f1ae807f297406c204efb63f92bb3597cf507fc508110bc99b267"
        },
        {
            "path": "beacon_linux.js",
            "tlsh": "5db1b7d6a57b41282bd3b89c679f84061823f217b512d8d0b6dc06248fc7924a1a2ded",
            "sha256": "60a0fbee8014300d0dd230765cbea7b61e9660a1584ad6a265de71927ff04c68"
        },
        {
            "path": "package.json",
            "tlsh": "53f002045c202c332ae43aa90c51ac8db630cf175050b91d437f593c42def3931bb24c",
            "sha256": "976f408116bd10045ba22f9f5fb834fd3083f189e56dae5844782401b6d5c180"
        }
    ]
}

source

"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/npm-sandbox-research-g3h4/MAL-2026-5763.json"

cwes

[
    {
        "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",
        "name": "Embedded Malicious Code"
    }
]