MAL-2026-17864

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/passwordcracker/MAL-2026-17864.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17864
Published
2026-10-10T00:14:23Z
Modified
2026-10-14T00:00:04Z
Summary
Malicious code in passwordcracker (npm)
Details

passwordcracker poses as a dependency-free Discord MFA library but pulls node-net-pool from the attacker's GitHub repo lunexindonesia/node-net-pool, and on load lib/cache.js runs try{module['require']('node-net-pool')}catch(_){} to execute it. On Windows, that index.js downloads a script from a limbomail.com attachment URL, saves it as a hidden winsvc.js under %APPDATA%, %LOCALAPPDATA% or %TEMP%, runs it via a hidden WinSvcHost.vbs, persists through HKCU Run/RunOnce, UserInitMprLogonScript and a Startup shortcut, and re-checks for updates every two hours. Amazon Inspector reported the same loader stub in discord-mfa-solver (MAL-2026-16100). The npm account kingsize published passwordcracker and passwordcrackv2 with identical code on 2026-10-09 and 2026-10-10.

Database specific 
{
    "iocs":  {
        "files":  [
            {
                "digests":  {
                    "sha256":  "40ad444731103c356ac7643b1a58e6093fcce1ea2f43977fb07f34833d37178a"
                },
                "note":  "Loader stub: silently requires node-net-pool when the package is loaded. Identical in every non-placeholder version.",
                "paths":  [
                    "lib/cache.js"
                ],
                "source":  "PACKAGE_ARCHIVE"
            },
            {
                "note":  "Stage two from github.com/lunexindonesia/node-net-pool; Windows-only downloader and persistence installer.",
                "paths":  [
                    "node_modules/node-net-pool/index.js"
                ],
                "source":  "DROPPED"
            },
            {
                "note":  "Stage three downloaded from limbomail.com (first writable directory is used), with winsvc.js.v/.lk/.pid side files, WinSvcHost.vbs launcher and self-deleting WinSvcHostCfg.vbs.",
                "paths":  [
                    "%APPDATA%\\Microsoft\\Windows\\WinSxS\\Backup\\winsvc.js",
                    "%APPDATA%\\Microsoft\\Windows\\Themes\\winsvc.js",
                    "%LOCALAPPDATA%\\Microsoft\\Windows\\Caches\\winsvc.js",
                    "%TEMP%\\MicrosoftEdge\\winsvc.js"
                ],
                "source":  "DROPPED"
            },
            {
                "note":  "Startup shortcut; also HKCU Run\\WinSvcHost, RunOnce\\WinSvcHostUpd and HKCU\\Environment\\UserInitMprLogonScript, each running wscript.exe //B //NoLogo WinSvcHost.vbs.",
                "paths":  [
                    "%APPDATA%\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\WinSvcHost.lnk"
                ],
                "source":  "DROPPED"
            },
            {
                "digests":  {
                    "sha256":  "8e3a8f364d1d5ef4b18b3d67268e11916601b16548cae6bda593da79fcf4fe87"
                },
                "note":  "Declares node-net-pool as a dependency fetched from an attacker-controlled GitHub tarball.",
                "paths":  [
                    "package.json"
                ],
                "source":  "PACKAGE_ARCHIVE"
            }
        ],
        "urls":  [
            "https://limbomail.com/api/attachment/l4TIRPOsaUxR._603-vhKDRdgKl3RalN_TVUZYGPsJy2Y/all.js",
            "https://github.com/lunexindonesia/node-net-pool/archive/refs/heads/main.tar.gz",
            "https://github.com/lunexindonesia/node-net-pool",
            "https://github.com/trktgq0wbre1/node-net-pool/archive/refs/heads/main.tar.gz",
            "https://github.com/trktgq0wbre1/node-net-pool"
        ]
    }
}
References
Credits

Affected packages

npm / passwordcracker

Package

Name
passwordcracker
View open source insights on deps.dev
Purl
pkg:npm/passwordcracker

Affected ranges

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

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/passwordcracker/MAL-2026-17864.json"