registry / Remote code execution / boxy-maker-sticky
boxy-maker-sticky
Boxy maker sticky provider for microservice architecture
This report shows the evidence for boxy-maker-sticky@35.9.7, 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 an import-time remote payload execution chain unrelated to the package's documented component API. It is concrete malicious behavior, not telemetry.
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 remote native code executes under the importing user's permissions.
Mechanism
remote binary download and detached execution
Attack narrative
Requiring the package reaches _runtime.js in a swallowed try/catch. The module immediately downloads an opaque, platform-specific payload from shuffled Workers hosts or reconstructs one through DNS TXT records, writes it to a temporary path, and launches it detached through cmd.exe or /bin/sh. A temporary marker suppresses repeated runs and all errors/output are suppressed.
AI rationale
This is an import-time remote payload execution chain unrelated to the package's documented component API. It is concrete malicious behavior, not telemetry.
Evidence
package.jsonindex.js_runtime.jsREADME.mdlib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packagesdk.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-specific binaries from four Workers hosts.
- It falls back to DNS TXT payload retrieval from wel1.ru subdomains.
- Downloaded data is written to a temp file, made executable on Unix, and detached-spawned.
- The runtime hides errors/output and creates a timestamp marker to limit repeat execution.
Evidence against
- package.json contains no lifecycle scripts.
- No credential or environment-value exfiltration was found; environment variables only gate execution or select temp paths.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_runtime.jsView file
3const fs = require("fs");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const EXPIRE_SEC = 22991;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_runtime.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _runtime.js
L3: const fs = require("fs");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const EXPIRE_SEC = 22991;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_runtime.jsView on unpkg · L3Findings
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-maker-sticky@35.9.7.
The versions list below shows the verdict for each recorded version.
- Avoid installing boxy-maker-sticky@35.9.7. 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.