registry / Remote code execution / bigops-storio
bigops-storio
Shared bigops storio library for backend integration
This report shows the evidence for bigops-storio@35.8.7. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
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, unauthenticated remote binary execution chain with stealthy host obfuscation and DNS fallback. It is concrete malware behavior, not telemetry required by the stated library API.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of index.js.
Impact
Arbitrary native code execution as the consuming application's user.
Mechanism
remote binary download, drop, and detached execution
Attack narrative
On ordinary package import, index.js silently loads _support.js. That module contacts rotating workers.dev hosts for a platform-specific binary and, if unavailable, reconstructs one from DNS TXT records on .ru domains. If the payload exceeds 1000 bytes, it writes it under a randomized temporary filename, makes it executable on Unix, and launches it detached through a shell or cmd.exe. The marker only rate-limits repeats; it does not prevent the initial execution.
AI rationale
This is an import-time, unauthenticated remote binary execution chain with stealthy host obfuscation and DNS fallback. It is concrete malware behavior, not telemetry required by the stated library API.
Evidence
package.jsonindex.js_support.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packagesdk.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 _support.js at module load.
- _support.js downloads platform binaries from obfuscated workers.dev hosts.
- It falls back to DNS TXT payload retrieval from .ru domains.
- Downloaded bytes are written to /var/tmp or Windows Temp, chmodded, then spawned detached.
- No integrity/signature verification 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
4 flagged · loading source_support.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L45: const TTL = 21222;
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");
...
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.
_support.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _support.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L45: const TTL = 21222;
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");
...
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.
_support.jsView on unpkg · L2119try {
L120: const cp = require("child_process");
L121: if (isWin) {
Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_support.js
CriticalTrigger Reachable Dangerous Capability_support.js
HighChild Process_support.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to bigops-storio@35.8.7.
The versions list below shows the verdict for each recorded version.
- Avoid installing bigops-storio@35.8.7. 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.