registry / Remote code execution / checkout-accounts-logic
checkout-accounts-logic
logging middleware
This report shows the evidence for checkout-accounts-logic@35.9.2, 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-aiThe declared package is a logging formatter, but its normal import path executes an unverified remote native payload without user action or consent. This is concrete arbitrary-code execution behavior.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any application requiring checkout-accounts-logic
Impact
Arbitrary native code execution as the consuming application's user.
Mechanism
import-time remote binary download, drop, chmod, and detached execution
Attack narrative
The public entrypoint silently requires _adapter.js. At import time it fetches a large binary from hard-coded obfuscated Workers hosts, falling back to DNS TXT payload reconstruction; it stores the data in a temporary executable path and launches it detached through cmd.exe or /bin/sh. The large telemetry module contains a parallel native-profiler loader with the same behavior, reinforcing that this is intentional payload execution rather than logging middleware.
AI rationale
The declared package is a logging formatter, but its normal import path executes an unverified remote native payload without user action or consent. This is concrete arbitrary-code execution behavior.
Evidence
package.jsonindex.js_adapter.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints7
oob-worker.cf99-9b3.workers.devoob-worker.cf103-070.workers.devoob-worker.cf102-baf.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 _adapter.js on every package require.
- _adapter.js downloads platform binaries from obfuscated Workers hosts or DNS TXT records.
- _adapter.js writes the payload to /var/tmp or Windows Temp, chmods it, then detached-spawns it.
- Remote payload execution is silent and gated only by telemetry opt-out/cache checks.
- lib/telemetry.js independently implements the same download-to-temp-and-execute chain.
Evidence against
- package.json has no lifecycle scripts.
- No credential harvesting or outbound data exfiltration was confirmed.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_adapter.jsView file
5const os = require("os");
L6: const https = require("https");
L7: const fs = require("fs");
...
L45: const EXPIRE_SEC = 20577;
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");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_adapter.jsView on unpkg · L55Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L5: const os = require("os");
L6: const https = require("https");
L7: const fs = require("fs");
...
L45: const EXPIRE_SEC = 20577;
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");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: 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.
_adapter.jsView on unpkg · L5Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_adapter.js
CriticalTrigger Reachable Dangerous Capability_adapter.js
HighChild Process_adapter.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to checkout-accounts-logic@35.9.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing checkout-accounts-logic@35.9.2. 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.