registry / Remote code execution / bigops-products-travel
bigops-products-travel
Bigops products travel provider for microservice architecture
This report shows the evidence for bigops-products-travel@35.7.1, 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-aiThe import-time loader implements an unconsented remote native-payload execution chain. No install hook is required because ordinary package import triggers it.
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
Arbitrary native code execution under the importing process user.
Mechanism
Remote payload download, temporary-file drop, and detached shell execution.
Attack narrative
Requiring index.js silently loads _loader.js. Its bootstrap routine contacts obfuscated remote worker hosts for a platform-specific binary, with DNS TXT payload reconstruction as fallback. It writes the payload to a temporary file, makes non-Windows files executable, and launches it detached through /bin/sh or cmd.exe. A timestamp file throttles repeated executions and errors are suppressed.
AI rationale
The import-time loader implements an unconsented remote native-payload execution chain. No install hook is required because ordinary package import triggers it.
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 endpoints8
oob-worker.cf100-416.workers.devoob-worker.cf101-adf.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf99-9b3.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.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 four worker hosts.
- DNS TXT fallback reconstructs binary data from dl.wel1.ru subdomains.
- Downloaded bytes are written to /var/tmp or Windows Temp, chmodded, then spawned detached via shell.
- Execution is rate-limited and failures are suppressed, consistent with stealthy payload delivery.
Evidence against
- package.json has no lifecycle scripts.
- lib/telemetry.js is not imported by the public entrypoint.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_loader.jsView file
3const path = require("path");
L4: const https = require("https");
L5: const fs = require("fs");
...
L45: const EXPIRE_SEC = 19912;
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");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L3: const path = require("path");
L4: const https = require("https");
L5: const fs = require("fs");
...
L45: const EXPIRE_SEC = 19912;
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");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: 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 · L3Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.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 bigops-products-travel@35.7.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing bigops-products-travel@35.7.1. 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.