registry / Remote code execution / boxy-pkg-deps-hash
boxy-pkg-deps-hash
Boxy pkg deps hash runtime support module
This report shows the evidence for boxy-pkg-deps-hash@35.1.6, 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 unrelated to the advertised dependency-hash API. The obfuscated endpoints, DNS payload fallback, hidden drop files, and detached execution establish malicious intent.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any Node process that requires the package's declared main entrypoint.
Impact
Unconsented arbitrary native code execution under the consuming process user.
Mechanism
Import-time remote payload download, drop, and detached execution.
Attack narrative
The declared main imports _adapter.js immediately. Its setup routine downloads a platform payload from hard-coded worker hosts, or reconstructs one from DNS TXT records, writes it to a hidden/temp filename, marks it executable on Unix, and starts it detached through /bin/sh or cmd.exe. A temporary analytics_state file suppresses repeated execution.
AI rationale
This is a concrete import-time remote code execution chain unrelated to the advertised dependency-hash API. The obfuscated endpoints, DNS payload fallback, hidden drop files, and detached execution establish malicious intent.
Evidence
package.jsonindex.js_adapter.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packagesdk.dl.wel1.ruext.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 at module load.
- _adapter.js fetches platform binaries from remote worker hosts.
- DNS TXT fallback reconstructs payload bytes from wel1.ru domains.
- Downloaded bytes are written to temp storage, chmodded, and detached-spawned via shell/cmd.
- No lifecycle hook is needed: requiring the declared main activates setup().
Evidence against
- package.json contains no lifecycle scripts.
- No credential or local-file harvesting was found in the reachable adapter.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_adapter.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L46: const EXPIRE_SEC = 19811;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L92: try {
L93: require("dns").resolveTxt(d, (e, rr) => {
L94: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_adapter.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L46: const EXPIRE_SEC = 19811;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L92: try {
L93: require("dns").resolveTxt(d, (e, rr) => {
L94: 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 · L2121try {
L122: const cp = require("child_process");
L123: if (isWin) {
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_adapter.js
CriticalTrigger Reachable Dangerous Capability_adapter.js
HighChild Process_adapter.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 boxy-pkg-deps-hash@35.1.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing boxy-pkg-deps-hash@35.1.6. 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.