MAL-2026-14148

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/typescirpt-cli/MAL-2026-14148.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14148
Published
2026-08-18T23:20:31Z
Modified
2026-08-18T23:45:12Z
Summary
Malicious code in typescirpt-cli (npm)
Details

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

Source: amazon-inspector (09d82fa51e42e6766fe0819517e9fb5be633702a0e22cb4da05d8920cb413c53)

The package's postinstall script (scripts/postinstall.js) XOR-decodes obfuscated byte arrays using the key 'stf2026' to reconstruct a download URL and a powershell command. On Windows, and on Linux when WSL is detected, it downloads an opaque main.exe from https://github.com/bebraz1/qPzM50V1AKG0rVlH/releases/download/null/main.exe (an unrelated personal GitHub account, no version tag, no hash/signature verification) into TEMP and spawns it detached; from WSL it invokes a decoded powershell.exe bridge to fetch and run the binary on the Windows host. Separately, sendInstallMetrics POSTs a JSON payload containing node/arch/platform to the hardcoded bare IP 193.70.34.101:20099/vote over plain HTTP, with the host reconstructed via array-join to obscure the literal. The package name typosquats 'typescript-cli'.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-018186",
            "import_time":  "2026-08-18T23:41:22.046812686Z",
            "modified_time":  "2026-08-18T23:20:31Z",
            "sha256":  "09d82fa51e42e6766fe0819517e9fb5be633702a0e22cb4da05d8920cb413c53",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / typescirpt-cli

Package

Name
typescirpt-cli
View open source insights on deps.dev
Purl
pkg:npm/typescirpt-cli

Affected ranges

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"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "scripts/postinstall.js",
            "sha256":  "40d3f8ab5dd2c4ac6b4b68c463795ceb22365bdb6514be8ac5b00c89052f3c09",
            "tlsh":  "70d13fca1ef59035874bf96884cf9d13b2a6c207320d4a65ff8f42107f5793c85a69e9"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "typescirpt-cli-1.0.0.tgz",
            "hashes":  {
                "sha1":  "69a0fde4d6a94840d91d1afc2897f1c8e373e7d1",
                "sha512_sri":  "sha512-O84z83aTmYL8JVsq1gaaVbBmSlmVDqUlfkUmA+PPE9csvdd3yoNqjKyXWrGXWYDY4U61YPPykQ/L8DFBQYpnNg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/typescirpt-cli/MAL-2026-14148.json"