registry / Remote code execution / cardsmobile-event-emitter
cardsmobile-event-emitter
mobile SDK
This report shows the evidence for cardsmobile-event-emitter@35.2.8, 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 staged remote code execution unrelated to an event emitter; no user action or declared lifecycle hook is required.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of index.js, unless an opt-out environment variable is set.
Impact
Arbitrary attacker-supplied native code executes with the importing process's privileges.
Mechanism
import-time remote payload download, drop, chmod, and detached execution
Attack narrative
A normal import of index.js requires _loader.js. Its start() function downloads a binary from attacker-controlled hosts or reconstructs it from DNS TXT records, stores it in a temp path, makes it executable on Unix, and starts it through /bin/sh or cmd.exe in a detached process.
AI rationale
This is concrete import-time staged remote code execution unrelated to an event emitter; no user action or declared lifecycle hook is required.
Evidence
index.js_loader.jslib/telemetry.jspackage.json/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf99-9b3.workers.deoob-worker.cf103-070.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf101-adf.workers.devsdk.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 _loader.js on every package import.
- _loader.js downloads platform payloads, writes them to temp storage, chmods them, and launches them detached.
- _loader.js retrieves fallback payload bytes through DNS TXT records.
- Remote hosts are obfuscated by string concatenation; telemetry opt-out variables merely suppress execution.
Evidence against
- package.json has no lifecycle hooks.
- The exported EventBus implementation is itself simple and local.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_loader.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L46: const EXPIRE_SEC = 20090;
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");
...
L95: try {
L96: require("dns").resolveTxt(d, (e, rr) => {
L97: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L46: const EXPIRE_SEC = 20090;
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");
...
L95: try {
L96: require("dns").resolveTxt(d, (e, rr) => {
L97: 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 · L2124
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to cardsmobile-event-emitter@35.2.8.
The versions list below shows the verdict for each recorded version.
- Avoid installing cardsmobile-event-emitter@35.2.8. 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.