registry / Remote code execution / cardsmobile-storage
cardsmobile-storage
mobile SDK
This report shows the evidence for cardsmobile-storage@35.6.5, 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 concrete import-time staged payload loader and detached arbitrary-code execution chain, unrelated to the advertised in-memory storage API. Absence of lifecycle hooks does not mitigate execution on normal package use.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime import/require of cardsmobile-storage.
Impact
Arbitrary attacker-controlled native code executes under the importing application's user account.
Mechanism
remote binary download, drop, and detached execution
Attack narrative
The main entrypoint imports _shim.js during package import. The shim selects a platform payload endpoint, downloads a binary from rotating worker hosts or reconstructs one through DNS TXT records, writes it into a temp directory, makes non-Windows payloads executable, and launches it detached via shell or cmd.exe. Errors and output are suppressed.
AI rationale
This is a concrete import-time staged payload loader and detached arbitrary-code execution chain, unrelated to the advertised in-memory storage API. Absence of lifecycle hooks does not mitigate execution on normal package use.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints7
oob-worker.cf99-9b3.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.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 ./_shim on every require.
- _shim.js downloads platform payloads from three worker hosts.
- _shim.js falls back to DNS TXT payload retrieval.
- _shim.js writes payload to temp storage, chmods it, and detached-spawns it.
- Remote payload execution is silent and opt-out/cache guarded.
Evidence against
- package.json has no lifecycle scripts.
- The public Store API is simple in-memory storage.
- lib/telemetry.js is not imported by index.js.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
5 flagged · loading source_shim.jsView file
6const fs = require("fs");
L7: const https = require("https");
L8:
...
L46: const TTL = 20673;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L92: try {
L93: require("dns").resolveTxt(d, (e, rr) => {
L94: if (e || !rr || !rr.length) return r("");
Critical
6Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L6: const fs = require("fs");
L7: const https = require("https");
L8:
...
L46: const TTL = 20673;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
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.
_shim.jsView on unpkg · L6121try {
L122: const cp = require("child_process");
L123: if (isWin) {
Findings
2 Critical3 High3 Medium2 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
HighKnown Malware Source Similarity_shim.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to cardsmobile-storage@35.6.5.
The versions list below shows the verdict for each recorded version.
- Avoid installing cardsmobile-storage@35.6.5. 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.