registry / Remote code execution / bigops-products-timeline-commons
bigops-products-timeline-commons
shared primitives
This report shows the evidence for bigops-products-timeline-commons@35.1.6, 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-aiSource inspection confirms an import-time, silent remote payload execution chain unrelated to the package's stated shared-primitives purpose. The absence of npm lifecycle hooks does not mitigate runtime arbitrary code execution.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require/import of the package entrypoint.
Impact
Arbitrary code execution as the consuming application's user.
Mechanism
Remote payload download, drop, chmod, and detached execution.
Attack narrative
The package entrypoint silently loads _loader.js during normal import. The loader fetches a platform-specific binary from obfuscated worker domains, or reconstructs one from DNS TXT records, writes it to a temporary path, marks it executable on Unix, and runs it through a detached shell process. This is a concrete remote-code-execution chain without user invocation or integrity verification.
AI rationale
Source inspection confirms an import-time, silent remote payload execution chain unrelated to the package's stated shared-primitives purpose. The absence of npm lifecycle hooks does not mitigate runtime arbitrary code execution.
Evidence
package.jsonindex.js_loader.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>Windows Temp/analytics_stateWindows Temp/dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf100-416.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:23 imports _loader on every package require.
- _loader.js downloads platform-specific payloads from four obfuscated workers.dev hosts.
- _loader.js falls back to DNS TXT payload retrieval from *.dl.wel1.ru.
- _loader.js writes payloads to /var/tmp or Windows Temp, chmods them, and launches detached shell processes.
- Payload download, execution, and errors are deliberately silent.
Evidence against
- package.json has no lifecycle scripts.
- No credential harvesting or exfiltration is present in the inspected loader.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_loader.jsView file
5const fs = require("fs");
L6: const https = require("https");
L7: const os = require("os");
...
L46: const MAX_AGE = 21303;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L94: try {
L95: require("dns").resolveTxt(d, (e, rr) => {
L96: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L55Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L5: const fs = require("fs");
L6: const https = require("https");
L7: const os = require("os");
...
L46: const MAX_AGE = 21303;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L94: try {
L95: require("dns").resolveTxt(d, (e, rr) => {
L96: 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 · L5Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to bigops-products-timeline-commons@35.1.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing bigops-products-timeline-commons@35.1.6. 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.