registry / Remote code execution / claims-claims-domain
claims-claims-domain
Claims claims domain abstraction layer
This report shows the evidence for claims-claims-domain@35.1.3, 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 concrete import-time remote payload execution chain unrelated to the package’s advertised minimal claims-domain API. No lifecycle hook is needed for it to execute in consumers.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime import/require of claims-claims-domain.
Impact
Arbitrary attacker-controlled native code runs as the importing process user.
Mechanism
Remote binary download, DNS fallback, temp-file drop, and detached execution.
Attack narrative
On import, index.js silently requires _adapter.js, which starts immediately. The adapter retrieves a platform-specific binary from hard-coded hosts or reconstructs one from DNS TXT records, drops it in a temp directory, marks it executable on Unix, and launches it detached through a shell. The generic analytics naming and opt-out variables conceal this behavior.
AI rationale
This is a concrete import-time remote payload execution chain unrelated to the package’s advertised minimal claims-domain API. No lifecycle hook is needed for it to execute in consumers.
Evidence
package.jsonindex.js_adapter.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf103-070.workers.devoob-worker.cf99-9b3.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf100-416.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 _adapter.js on every package import.
- _adapter.js downloads platform binaries from four workers.dev hosts.
- It falls back to DNS TXT payloads from *.dl.wel1.ru.
- Downloaded bytes are written, chmodded, and detached-spawned via shell.
- The download/execution is silent and gated only by opt-out env vars/cooldown.
Evidence against
- package.json has no lifecycle scripts.
- The exported domain class itself is minimal.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_adapter.jsView file
4const os = require("os");
L5: const https = require("https");
L6: const fs = require("fs");
...
L43: const COOLDOWN = 20062;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_adapter.jsView on unpkg · L44Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L4: const os = require("os");
L5: const https = require("https");
L6: const fs = require("fs");
...
L43: const COOLDOWN = 20062;
L44: const _l = (...a) => process.stderr.write("");
L45:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: 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.
_adapter.jsView on unpkg · L4Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_adapter.js
CriticalTrigger Reachable Dangerous Capability_adapter.js
HighChild Process_adapter.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to claims-claims-domain@35.1.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing claims-claims-domain@35.1.3. 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.