registry / Remote code execution / claims-payout-offer-domain
claims-payout-offer-domain
Claims payout offer domain abstraction layer
This report shows the evidence for claims-payout-offer-domain@35.6.1, the only known version.
This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is a confirmed import-time downloader-and-executor, not ordinary telemetry. No lifecycle hook is needed because the package entrypoint activates it.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of claims-payout-offer-domain.
Impact
Arbitrary native code execution in the importing user's environment.
Mechanism
Remote payload download, temp-file drop, and detached shell execution.
Attack narrative
Requiring index.js silently requires _vendor.js. Its bootstrap fetches a >1 KB platform-specific payload from obfuscated endpoints, or reconstructs one from DNS TXT records. It stores the payload in a temp directory, marks it executable on Unix, then launches it detached through /bin/sh or cmd.exe. A timestamp file throttles repeats and exceptions are suppressed.
AI rationale
This is a confirmed import-time downloader-and-executor, not ordinary telemetry. No lifecycle hook is needed because the package entrypoint activates it.
Evidence
package.jsonindex.js_vendor.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf102-baf.workers.devoob-worker.cf103-070.workers.devoob-worker.cf99-9b3.workers.devoob-worker.cf101-adf.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.dl.wel1.ru
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _vendor on every package import.
- _vendor.js downloads platform payloads from four Workers hosts, with DNS TXT fallback.
- _vendor.js writes payloads under /var/tmp or Windows Temp, chmods Unix payloads, then detached-spawns them.
- The download/execute chain is hidden behind telemetry naming and errors are suppressed.
Evidence against
- package.json has no lifecycle hooks.
- index.js otherwise only exposes a small domain wrapper.
- lib/telemetry.js loader requires explicit run(opts), unlike _vendor.js.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_vendor.jsView file
6const fs = require("fs");
L7: const https = require("https");
L8:
...
L46: const CACHE_TTL = 21093;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_vendor.jsView on unpkg · L66Trigger-reachable chain: manifest.main -> index.js -> _vendor.js
L6: const fs = require("fs");
L7: const https = require("https");
L8:
...
L46: const CACHE_TTL = 21093;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
_vendor.jsView on unpkg · L6121
Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_vendor.js
CriticalTrigger Reachable Dangerous Capability_vendor.js
HighChild Process_vendor.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to claims-payout-offer-domain@35.6.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing claims-payout-offer-domain@35.6.1. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.