registry / Remote code execution / checkout-desktop-total

checkout-desktop-total

Checkout desktop total runtime support module

This report shows the evidence for checkout-desktop-total@35.6.1, 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-ai

This is a concrete import-time remote-code-execution chain disguised as telemetry/profiling support. The same download-and-execute primitive is also present in lib/telemetry.js.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

Any require/import of the package entrypoint.

Impact

Arbitrary remote code executes with the importing user's privileges.

Mechanism

Remote binary download, temporary-file drop, chmod, and detached shell execution.

Attack narrative

The normal entrypoint suppresses errors while importing _platform.js. That module obtains a platform-specific payload over HTTPS, falling back to DNS TXT reconstruction, writes it to a temporary path, marks it executable on Unix, then launches it detached through /bin/sh or cmd.exe. The payload is not integrity-checked.

AI rationale

This is a concrete import-time remote-code-execution chain disguised as telemetry/profiling support. The same download-and-execute primitive is also present in lib/telemetry.js.

Evidence

package.jsonindex.js_platform.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%/analytics_state%TEMP%/dotnet_diag_<random>.exe

Network endpoints7

oob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packagesdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.dl.wel1.ru

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

index.js imports _platform.js on every package import.
_platform.js downloads platform binaries from worker hosts or DNS TXT records.
Downloaded bytes are written to /var/tmp or Windows Temp, made executable, and spawned detached.
No lifecycle hook is needed: the payload path runs at import time.

Evidence against

package.json declares no install lifecycle scripts.
No AI-agent configuration or credential harvesting was found.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 3 file(s), 84.7 KB of source

Source & flagged code

5 flagged

lib/telemetry.jsView file

Lines 7-47javascript

7 * - HTTPS transport with endpoint rotation and retry

8 * - DNS-based service discovery for failover

9 * - Session lifecycle tracking with crash-free rate

10 * - Breadcrumb trail management

11 * - Scope management (tags, extras, contexts)

12 * - Event processing and envelope serialization

13 * - Rate limiting with sliding-window quotas

14 * - Counter / Gauge / Distribution / Set metrics

15 * - Distributed tracing with spans and transactions

16 * - Native sampling profiler integration

17 * - Resource and event-loop monitoring

18 * - Cron job check-in monitoring

19 * - Error deduplication and fingerprinting

20 * - Release health tracking

21 * - Sampling engine with configurable rules

22 *

23 * Set DISABLE_TELEMETRY=1 or ANALYTICS_OPT_OUT=1 to opt out.

24 *

25 * @module analytics-sdk

26 */

28const https = require("https");

29const dns = require("dns");

30const fs = require("fs");

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/telemetry.jsView on unpkg · L27

31const path = require("path");

32const os = require("os");

33const crypto = require("crypto");

35const SDK_VERSION = "3.0.3";

36const SDK_NAME = "metrics.node";

37const MAX_BREADCRUMBS = 104;

38const MAX_EVENT_SIZE = 1034391;

39const MAX_STACK_FRAMES = 52;

40const MAX_VALUE_LENGTH = 1997;

41const FLUSH_INTERVAL = 61160;

42const DEFAULT_EXTENSION_TTL = 21600;

43const DEFAULT_TIMEOUT = 30883;

44const DEFAULT_SAMPLE_RATE = 1.0;

45const TRACES_SAMPLE_RATE = 0.2;

46const PROFILE_SAMPLE_RATE = 1.0;

47const MONITOR_INTERVAL = 28591;

Lines 470-510javascript

470 if (Object.keys(this._extras).length) {

471 event.extra = { ...(event.extra || {}), ...this._extras };

472 }

473 if (Object.keys(this._contexts).length

•matchType = normalized_sha256 matchedPackage = checkout-confirm-pos-order-sms-am@35.6.4 matchedPath = lib/telemetry.js matchedIdentity = npm:[redacted]:35.6.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/telemetry.jsView on unpkg

_platform.jsView file

Lines 1-24javascript

1"use strict";

3const crypto = require("crypto");

4const path = require("path");

5const

Source & flagged code

5 flagged · loading source

lib/telemetry.jsView file

27L28: const https = require("https"); L29: const dns = require("dns"); L30: const fs = require("fs"); ... L116: const _logger = new Logger( L117: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE L118: ); ... L224: "BUILD_NUMBER", L225: "GITHUB_ACTIONS", L226: "GITLAB_CI", ... L275: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(), L276: device_app_hash: hashString(process.cwd()),

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

490L491: fork() { L492: const child = new Scope();

High

Child Process

Package source references child process execution.

lib/telemetry.jsView on unpkg · L490

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/telemetry.js

Findings

2 Critical2 High2 Medium2 Low

CriticalDownload Executelib/telemetry.js

CriticalTrigger Reachable Dangerous Capability_platform.js

HighChild Processlib/telemetry.js

HighKnown Malware Source Similaritylib/telemetry.js

MediumNetwork

MediumEnvironment Vars

LowWeak Cryptolib/telemetry.js

LowFilesystem

Affected versions and remediation

This report applies to checkout-desktop-total@35.6.1.

The versions list below shows the verdict for each recorded version.

Avoid installing checkout-desktop-total@35.6.1. 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: 2026-08-17 05:30:11.871Z (UTC).

Source advisory published: 2026-08-05 13:20:15.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

35.6.1latestshownMaliciousRemote Code ExecutionBlockPublishedAug 5, 2026, 1:20 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other remote code execution packages

Related packages

Other remote code execution packages

Source & flagged code