registry / Remote code execution / cardsmobile-cardsmobile-core
cardsmobile-cardsmobile-core
base framework module
This report shows the evidence for cardsmobile-cardsmobile-core@35.6.6, 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-aiConfirmed import-time staged payload download and detached execution is concrete malicious behavior, regardless of the absence of npm lifecycle hooks.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any require/import of index.js.
Impact
Arbitrary remote code execution under the importing user's privileges.
Mechanism
HTTPS/DNS payload download, temp-file drop, detached shell execution.
Attack narrative
The main entrypoint silently requires _shim.js. On import, the shim obtains a platform-specific payload over HTTPS, or reconstructs one from DNS TXT records, writes it beneath /var/tmp or Windows Temp, marks it executable on Unix, and spawns it detached via /bin/sh or cmd.exe. The behavior is unrelated to the documented core API and permits operator-controlled remote code execution.
AI rationale
Confirmed import-time staged payload download and detached execution is concrete malicious behavior, regardless of the absence of npm lifecycle hooks.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js
Network endpoints8
oob-worker.cf103-070.workers.devoob-worker.cf99-9b3.workers.devoob-worker.cf100-416.workers.devoob-worker.cf101-adf.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 _shim.js at module load.
- _shim.js fetches platform payloads from worker hosts.
- _shim.js falls back to DNS TXT payload delivery.
- _shim.js writes the payload to a temp path and launches it detached.
Evidence against
- package.json has no lifecycle scripts.
- The public core class itself is minimal.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_shim.jsView file
3const crypto = require("crypto");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const COOLDOWN = 21297;
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");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: if (e || !rr || !rr.length) return r("");
Critical
3Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L3: const crypto = require("crypto");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const COOLDOWN = 21297;
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");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: 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 · L3Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to cardsmobile-cardsmobile-core@35.6.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing cardsmobile-cardsmobile-core@35.6.6. 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: .
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