registry / Remote code execution / bigops-products-investment
bigops-products-investment
Bigops products investment SDK for internal consumers
This report shows the evidence for bigops-products-investment@35.3.1, 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-aiSource directly establishes import-time retrieval and execution of an unverified remote native payload; no legitimate SDK behavior requires this concealed loader.
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 attacker-controlled code executes with the importing process's privileges.
Mechanism
remote payload download/DNS retrieval followed by detached native execution
Attack narrative
On package import, index.js silently requires _vendor.js. That module identifies the platform, downloads a binary from rotating workers.dev hosts or reconstructs one from DNS TXT records, writes it under a benign temporary filename, makes it executable on Unix, and launches it detached through /bin/sh or cmd.exe. This is an unconsented staged payload execution chain.
AI rationale
Source directly establishes import-time retrieval and execution of an unverified remote native payload; no legitimate SDK behavior requires this concealed loader.
Evidence
package.jsonindex.js_vendor.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.cf101-adf.workers.dev/pkg/packageoob-worker.cf102-baf.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 ./_vendor on every package import.
- _vendor.js downloads platform binaries from three workers.dev hosts.
- _vendor.js falls back to DNS TXT payloads from dl.wel1.ru domains.
- _vendor.js writes the payload to temporary storage, chmods it, then launches it detached via shell/cmd.
- Loader errors and output are suppressed; a timestamp file throttles repeat execution.
- lib/telemetry.js independently contains the same remote-native-payload execution pattern.
Evidence against
- package.json has no lifecycle scripts.
- The exported SDK API itself is minimal; lib/telemetry.js is not imported by index.js.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_vendor.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L45: const STAMP_TTL = 21328;
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.
_vendor.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _vendor.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L45: const STAMP_TTL = 21328;
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.
_vendor.jsView on unpkg · L2119
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_vendor.js
CriticalTrigger Reachable Dangerous Capability_vendor.js
HighChild Process_vendor.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-investment@35.3.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing bigops-products-investment@35.3.1. 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: .
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