MAL-2026-18109

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/rs-lookout-sandbox-poc/MAL-2026-18109.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18109
Published
2026-10-20T18:45:31Z
Modified
2026-10-20T19:00:04Z
Summary
Malicious code in rs-lookout-sandbox-poc (npm)
Details

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

Source: amazon-inspector (4f28ed1c404dad5afc7b70b345eeef6f81e04dcee77be3a7553956c7a43f8e7c)

On module load, index.js reads os.userInfo().username and issues an HTTPS GET to a hardcoded third-party collector at https://webhook.site/553dad0e-c841-46a8-b07d-213b52a24686/, transmitting the installer's local username to an anonymous external endpoint. The same top-level code performs AWS Instance Metadata Service reconnaissance against 169.254.169.254: it PUTs /latest/api/token to obtain an IMDSv2 session token and then GETs /latest/meta-data/iam/security-credentials/ to enumerate the IAM role attached to the host. Both behaviors fire automatically when the package is required, with no caller action.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-021548",
            "import_time":  "2026-10-20T18:46:13.674706765Z",
            "modified_time":  "2026-10-20T18:45:31Z",
            "sha256":  "4f28ed1c404dad5afc7b70b345eeef6f81e04dcee77be3a7553956c7a43f8e7c",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / rs-lookout-sandbox-poc

Package

Name
rs-lookout-sandbox-poc
View open source insights on deps.dev
Purl
pkg:npm/rs-lookout-sandbox-poc

Affected ranges

Affected versions

1.*
1.0.1

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "index.js",
            "sha256":  "7bdac5b84fece5c9d8101fe1317ec7e5838062bd7777ec25a558e25fa33c8b14",
            "tlsh":  "8b2163d491e4703377b168acf4269b43e913ea442883c5c4f67447d7fd88490bc227b8"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "rs-lookout-sandbox-poc-1.0.1.tgz",
            "hashes":  {
                "sha1":  "f08e0c6a06b3086fed2ccd73000a9ec546d7733e",
                "sha512_sri":  "sha512-SFlisk2msScb8QsQ5Tj1Vok19Q5UGmCkCvFAKv5XzASXlba6H+6WoODyLLb6QqfUSkSg1p4YflnAqsKw1tvI3Q=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/rs-lookout-sandbox-poc/MAL-2026-18109.json"