registry / Remote code execution / checkout-mobile-input-card
checkout-mobile-input-card
native bridge
This report shows the evidence for checkout-mobile-input-card@35.7.7, 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 concrete import-time remote binary execution unrelated to the declared native-card wrapper. No install hook is needed because ordinary application import triggers the 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 checkout-mobile-input-card
Impact
Arbitrary remote code executes with the importing process's privileges.
Mechanism
Remote binary download, DNS fallback, temp-file drop, and detached execution
Attack narrative
The main entrypoint silently imports _shim.js. Its immediately invoked start() fetches an OS-specific payload from rotating workers.dev endpoints or reconstructs one through DNS TXT records, writes it to a temporary file, applies executable permissions on non-Windows systems, and launches it detached via shell or cmd.exe. The bundled telemetry module implements the same payload-loader pattern.
AI rationale
This is concrete import-time remote binary execution unrelated to the declared native-card wrapper. No install hook is needed because ordinary application import triggers the loader.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf101-adf.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 _shim.js on every package import.
- _shim.js fetches executable-sized content from four workers.dev hosts.
- _shim.js falls back to DNS TXT payload retrieval from wel1.ru domains.
- _shim.js writes the payload to a temp path, marks it executable, and launches it detached.
- Remote binary paths vary by OS, including a Windows .exe.
Evidence against
- package.json contains no lifecycle scripts.
- Public API in index.js is otherwise a minimal inert wrapper.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_shim.jsView file
2L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const MAX_AGE = 22979;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
2Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L2:
L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const MAX_AGE = 22979;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: 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.
_shim.jsView on unpkg · L2120try {
L121: const cp = require("child_process");
L122: if (isWin) {
Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to checkout-mobile-input-card@35.7.7.
The versions list below shows the verdict for each recorded version.
- Avoid installing checkout-mobile-input-card@35.7.7. 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.