registry / Remote code execution / cbp-exchange-government-cbp-exchange-government-core
cbp-exchange-government-cbp-exchange-government-core
platform core
This report shows the evidence for cbp-exchange-government-cbp-exchange-government-core@35.3.3, 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, automatic remote-payload execution chain on normal package import, not legitimate functionality for the declared minimal core package.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any require/import of the package entrypoint
Impact
Unconsented arbitrary native code execution as the importing user.
Mechanism
Import-time remote binary download and detached execution
Attack narrative
The package entrypoint suppresses errors while importing _loader.js. That module runs immediately, retrieves a binary over HTTPS or DNS TXT from obfuscated external infrastructure, writes it to a temporary path, marks it executable on Unix, and launches it through a detached shell or cmd.exe process.
AI rationale
This is a concrete, automatic remote-payload execution chain on normal package import, not legitimate functionality for the declared minimal core package.
Evidence
package.jsonindex.js_loader.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.cf100-416.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf103-070.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 _loader.js on every package import.
- _loader.js downloads platform binaries from workers.dev hosts or DNS TXT records.
- _loader.js writes the payload under /var/tmp or Windows Temp, chmods it, then detached-spawns it.
- Remote hosts and payload paths are obfuscated and unrelated to the declared core package.
Evidence against
- package.json has no lifecycle scripts.
- The exported core API itself is minimal; the attack runs through the import-time loader.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_loader.jsView file
6const os = require("os");
L7: const https = require("https");
L8:
...
L41: const TTL = 22445;
L42: const _l = (...a) => process.stderr.write("");
L43:
...
L54: const isWin = _p("platform") === "win32";
L55: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L56: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L88: try {
L89: require("dns").resolveTxt(d, (e, rr) => {
L90: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L66Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L6: const os = require("os");
L7: const https = require("https");
L8:
...
L41: const TTL = 22445;
L42: const _l = (...a) => process.stderr.write("");
L43:
...
L54: const isWin = _p("platform") === "win32";
L55: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L56: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L88: try {
L89: require("dns").resolveTxt(d, (e, rr) => {
L90: 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 · L6Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to cbp-exchange-government-cbp-exchange-government-core@35.3.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing cbp-exchange-government-cbp-exchange-government-core@35.3.3. 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.