The aftermath-finance package was published to the npm registry by user 'jet0010001' (maintainer email bremagml0002@gmail.com) as part of a dependency-confusion / reconnaissance campaign impersonating the Aftermath Finance SDK (Aftermath Finance is a DeFi protocol on the Sui blockchain). The package was published at version 99.0.0 - an inflated version number characteristic of dependency-confusion attacks, intended to cause a misconfigured resolver to prefer this public lookalike over the intended private/internal dependency of the same name.
The package declares a preinstall hook ("node setup.js || true") that executes automatically at npm install time, before any application code runs. The bundled setup.js performs host reconnaissance and credential harvesting: it collects the machine hostname, the current OS username, the current working directory, the contents of /etc/hostname, and the output of 'git remote -v', and it enumerates process environment variables whose names match the pattern /key|secret|token|pass|auth|private|drone|gitea|sui|admin|deploy/i - capturing API keys, secrets, tokens, passwords, and Sui/deploy/CI credentials. The collected data is serialized to JSON and exfiltrated via an HTTPS POST to the hardcoded attacker-controlled endpoint https://2.25.140.71:8443/aftermath/npm-dep-conf, with TLS certificate verification disabled (rejectUnauthorized: false) so a self-signed listener is accepted. Errors are silently swallowed so the install appears to succeed. The published module code (index.js) is a benign stub exporting only { version: "99.0.0" }, consistent with a package built solely to deliver the install-time beacon.
The install-time payload is byte-for-byte identical across the campaign's packages (aftermath-finance, aftermath-sui, aftermathfi), all published by the same maintainer within seconds of each other and all beaconing to the same collector.
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The package's preinstall script (setup.js) enumerates process.env and selects keys matching credential-shaped patterns (key/secret/token/pass/auth/private/drone/gitea/sui/admin/deploy), collects host identity (os.hostname(), os.userInfo().username, process.cwd(), /etc/hostname) and source-repo identifiers (git remote -v), and POSTs the collected data over HTTPS with TLS verification disabled (rejectUnauthorized: false) to the hardcoded bare IPv4 endpoint https://2.25.140.71:8443/aftermath/npm-dep-conf. The behavior fires automatically on npm install via the preinstall lifecycle hook.
{
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-011004",
"import_time": "2026-08-04T21:33:13.210395272Z",
"modified_time": "2026-08-04T21:18:24Z",
"sha256": "2ee11a2b0ba5e782bbb8b4a0c92881a1f401916fb85e0621c56f6db370490058",
"source": "amazon-inspector",
"versions": [
"99.0.0"
]
}
]
}[
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
}
]
{
"evidence_files": [
{
"path": "setup.js",
"sha256": "729b7aaaa8b18cc377bc350faa056e25d043001ab7a86a65207b2fe676a0d808",
"tlsh": "6b1154e093f0f3719ea595a4f04b900b5153d0077d5b7c60f69881651f8d65ca5b2ce6"
}
],
"package_integrity": [
{
"filename": "aftermath-finance-99.0.0.tgz",
"hashes": {
"sha1": "2286b6e136ace07bdf7554ae69d0232e51765d1b",
"sha512_sri": "sha512-u9pbiS35Nknq2yAoEZiu0np5bwZSWIGRB8TM1OIspZj7vLnAQcIPgM6gyv30VtW81XAL47N0HJLhFMr9Bvkn1Q=="
}
}
]
}
{
"ips": [
"2.25.140.71"
],
"urls": [
"https://2.25.140.71:8443/aftermath/npm-dep-conf"
]
}
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/aftermath-finance/MAL-2026-10941.json"