MAL-2026-11491

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/test-dev-host/MAL-2026-11491.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-11491
Aliases
  • GHSA-6v46-5v2x-c3c5
Published
2026-08-01T03:43:30Z
Modified
2026-08-04T22:05:19.324210759Z
Summary
Malicious code in test-dev-host (npm)
Details

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

Source: amazon-inspector (85b3df759cd11b9c662bed5840b0671d4e9c54a76a606d284ca39390ecf51f8d)

test-dev-host@0.1.0 connects out to a hardcoded socket server (host/port sourced from the test-dev-config module) and enters a receive-loop that dispatches remote messages to handlers for 'command', 'download', 'upload', 'archive', 'install', 'grabext', 'keylog', and 'address'. This gives the remote operator arbitrary shell command execution, file read/write, archive exfiltration, and browser-extension install/theft on the installer's host. On a 'keylog' message the agent flushes a keystroke buffer, computes a hardware fingerprint, and uploads the local keylog file via uploadFileToPublicApi keyed by machineId. src/pylauncher.js also fetches XOR+base64-encrypted (key 'w3x') address replacements from ${DJANGOAPIURL}/address and installs them as helper.walletreplacements, implementing the clipboard/wallet-address swap pattern that redirects cryptocurrency transfers to attacker-controlled addresses. Obfuscation (base64 + XOR of C2-supplied data) is used to conceal the wallet-swap payload.

Source: ghsa-malware (27cded0e4f6f17de980e65abefd0ed8b4a24a7f817e8a8506492d4ed87d5ab82)

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": [
        {
            "source": "ghsa-malware",
            "modified_time": "2026-08-01T03:43:30Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-6v46-5v2x-c3c5",
            "sha256": "27cded0e4f6f17de980e65abefd0ed8b4a24a7f817e8a8506492d4ed87d5ab82",
            "import_time": "2026-08-02T22:41:04.808605Z"
        },
        {
            "import_time": "2026-08-04T21:33:12.497696675Z",
            "sha256": "85b3df759cd11b9c662bed5840b0671d4e9c54a76a606d284ca39390ecf51f8d",
            "modified_time": "2026-08-04T21:15:52Z",
            "id": "IN-MAL-2026-010987",
            "versions": [
                "0.1.0"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / test-dev-host

Package

Name
test-dev-host
View open source insights on deps.dev
Purl
pkg:npm/test-dev-host

Affected ranges

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

Affected versions

0.*
0.1.0

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "src/main_agent.js",
            "sha256": "89ecad7e0211b8ad922e75d88eb77ca294963299b5f324b9ba85f3515c5a21af",
            "tlsh": "85c14544289eb56809b7b3b5a757b006f62381db070465c9bbfcd3506f388f126a1fd8"
        },
        {
            "path": "src/py_launcher.js",
            "sha256": "cee2abd1b8f72550e69a22ad25e73c933d929bd2c55647220374527fda24b92e",
            "tlsh": "6b410d8274b7a1510ab277b8135fa50aea7aa1a33784c584f3ad87132f76d30a461dcc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/test-dev-host/MAL-2026-11491.json"