registry / Remote code execution / claims-policy-details-api-adapters
claims-policy-details-api-adapters
API client bindings
This report shows the evidence for claims-policy-details-api-adapters@35.3.1, 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-aiThe import-time loader is concrete remote payload execution, not package-aligned API behavior. Telemetry code independently contains the same download-and-launch primitive.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime import of index.js
Impact
Arbitrary attacker-controlled code execution in the importing user's environment.
Mechanism
remote binary download, drop, chmod, and detached shell execution
Attack narrative
At package import, index.js requires _loader.js. Its bootstrap fetches a platform-specific opaque payload from obfuscated external hosts, or reconstructs one from DNS TXT records. It writes the bytes to a temporary executable path, applies execute permission on non-Windows systems, then starts it through a detached shell or cmd.exe process. This creates silent remote code execution without user invocation or payload integrity verification.
AI rationale
The import-time loader is concrete remote payload execution, not package-aligned API behavior. Telemetry code independently contains the same download-and-launch primitive.
Evidence
package.jsonindex.js_loader.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints7
oob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packagesdk.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 _loader.js on every package import.
- _loader.js downloads platform payloads from three obfuscated worker hosts.
- _loader.js falls back to DNS TXT payload retrieval via *.wel1.ru.
- Downloaded bytes are written under /var/tmp or Windows Temp, chmodded, and launched detached.
- No hash/signature validation is performed before execution.
Evidence against
- package.json has no lifecycle scripts.
- The declared API entry point is otherwise a minimal adapter class.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_loader.jsView file
2L3: const https = require("https");
L4: const path = require("path");
...
L44: const MAX_AGE = 21659;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L2:
L3: const https = require("https");
L4: const path = require("path");
...
L44: const MAX_AGE = 21659;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: 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.
_loader.jsView on unpkg · L2Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to claims-policy-details-api-adapters@35.3.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing claims-policy-details-api-adapters@35.3.1. 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.