registry / Remote code execution / boxy-service
boxy-service
Shared boxy service library for backend integration
This report shows the evidence for boxy-service@35.6.4, 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-code-execution chain disguised as compatibility/telemetry behavior. Absence of an npm lifecycle script does not mitigate execution when consumers import the package.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require of boxy-service through index.js.
Impact
Arbitrary native code execution as the importing process user.
Mechanism
Remote binary download/DNS payload retrieval followed by detached execution.
Attack narrative
The main entrypoint suppresses errors while importing _compat.js. On import, that module downloads an opaque platform-specific payload from obfuscated rotating hosts, with DNS TXT records as a fallback. It saves the payload under a random temporary filename, makes it executable on Unix, and launches it detached via a shell or cmd.exe, without validating its origin or integrity.
AI rationale
This is a concrete import-time remote-code-execution chain disguised as compatibility/telemetry behavior. Absence of an npm lifecycle script does not mitigate execution when consumers import the package.
Evidence
package.jsonindex.js_compat.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf103-070.workers.devoob-worker.cf101-adf.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 _compat on every package require.
- _compat.js downloads platform-specific binaries from rotating hosts.
- _compat.js can reconstruct a binary from DNS TXT records.
- _compat.js writes, chmods, and detached-executes the downloaded file.
- No integrity/signature validation is performed before execution.
Evidence against
- package.json has no lifecycle scripts.
- No credential or environment-value exfiltration was found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_compat.jsView file
2L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const MAX_AGE = 20389;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_compat.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _compat.js
L2:
L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const MAX_AGE = 20389;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_compat.jsView on unpkg · L2120try {
L121: const cp = require("child_process");
L122: if (isWin) {
Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_compat.js
CriticalTrigger Reachable Dangerous Capability_compat.js
HighChild Process_compat.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to boxy-service@35.6.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing boxy-service@35.6.4. 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.