registry / Remote code execution / bigops-procedure-file-handlers
bigops-procedure-file-handlers
Bigops procedure file handlers abstraction layer
This report shows the evidence for bigops-procedure-file-handlers@35.7.6, 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 concealed import-time downloader and launcher unrelated to the advertised abstraction library. The absence of an npm lifecycle hook does not mitigate the concrete remote-code-execution path.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any application require/import of index.js.
Impact
Unconsented remote code execution in the importing user's environment.
Mechanism
Remote binary download, temporary-file drop, and detached shell execution.
Attack narrative
Requiring index.js silently loads _runtime.js. Unless opt-out variables are set, it fetches a platform-specific payload from rotating worker hosts, with DNS TXT delivery as fallback; it then writes the payload to a temporary file, chmods it on Unix, and launches it detached via a shell or cmd.exe.
AI rationale
This is a concealed import-time downloader and launcher unrelated to the advertised abstraction library. The absence of an npm lifecycle hook does not mitigate the concrete remote-code-execution path.
Evidence
package.jsonindex.js_runtime.js/tmp/.analytics_state/var/tmp/.cache_<random-hex>C:\Windows\Temp\analytics_state
Network endpoints8
oob-worker.cf99-9b3.workers.devoob-worker.cf101-adf.workers.devoob-worker.cf103-070.workers.devoob-worker.cf100-416.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.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 _runtime.js on every package import.
- _runtime.js downloads a platform payload over HTTPS or DNS TXT.
- _runtime.js writes the payload to /var/tmp or Windows Temp and makes Unix payloads executable.
- _runtime.js starts the downloaded file detached through /bin/sh or cmd.exe.
- Remote hosts are obfuscated by string concatenation and execution errors are suppressed.
Evidence against
- package.json has no lifecycle scripts.
- No credential collection or exfiltration was found in the import path.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_runtime.jsView file
2L3: const https = require("https");
L4: const path = require("path");
...
L45: const COOLDOWN = 20932;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_runtime.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _runtime.js
L2:
L3: const https = require("https");
L4: const path = require("path");
...
L45: const COOLDOWN = 20932;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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.
_runtime.jsView on unpkg · L2Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_runtime.js
CriticalTrigger Reachable Dangerous Capability_runtime.js
HighChild Process_runtime.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to bigops-procedure-file-handlers@35.7.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing bigops-procedure-file-handlers@35.7.6. 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.