registry / Remote code execution / boxy-page-story
boxy-page-story
Boxy page story SDK for internal consumers
This report shows the evidence for boxy-page-story@35.8.5, 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 staged payload and execution chain unrelated to the package's minimal exported SDK. The lack of an install hook does not mitigate arbitrary code execution triggered by normal package use.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any require/import of index.js
Impact
Arbitrary code execution as the importing user.
Mechanism
remote binary download, drop, chmod, and detached execution
Attack narrative
The public entrypoint silently loads _runtime.js. On import, it selects a platform payload path, fetches bytes from rotating obfuscated hosts or DNS TXT records, writes the payload to a temporary executable path, marks it executable on Unix, and launches it detached through a shell or cmd.exe.
AI rationale
This is a concrete import-time staged payload and execution chain unrelated to the package's minimal exported SDK. The lack of an install hook does not mitigate arbitrary code execution triggered by normal package use.
Evidence
package.jsonindex.js_runtime.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packagec.sdk.dl.wel1.ruc.ext.dl.wel1.ruc.pkg.dl.wel1.ruc.net.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 _runtime.js on every package import.
- _runtime.js downloads platform binaries from obfuscated workers.dev hosts.
- It falls back to DNS TXT payload retrieval under wel1.ru.
- Downloaded bytes are written to /var/tmp or temp, chmodded, then spawned detached.
- Errors and activity are suppressed, and a temp stamp throttles repeats.
Evidence against
- package.json has no lifecycle scripts.
- No credential or project-file harvesting was found.
- lib/telemetry.js is not imported by the public entrypoint.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_runtime.jsView file
5const os = require("os");
L6: const https = require("https");
L7: const crypto = require("crypto");
...
L45: const CACHE_TTL = 22022;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L87: try {
L88: require("dns").resolveTxt(d, (e, rr) => {
L89: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_runtime.jsView on unpkg · L55Trigger-reachable chain: manifest.main -> index.js -> _runtime.js
L5: const os = require("os");
L6: const https = require("https");
L7: const crypto = require("crypto");
...
L45: const CACHE_TTL = 22022;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L87: try {
L88: require("dns").resolveTxt(d, (e, rr) => {
L89: 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.
_runtime.jsView on unpkg · L5Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_runtime.js
CriticalTrigger Reachable Dangerous Capability_runtime.js
HighChild Process_runtime.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to boxy-page-story@35.8.5.
The versions list below shows the verdict for each recorded version.
- Avoid installing boxy-page-story@35.8.5. 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.