registry / Remote code execution / devplatform-spa-testing
devplatform-spa-testing
mock builder
This report shows the evidence for devplatform-spa-testing@35.8.6. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
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 mock-builder package has no legitimate reason to fetch and execute opaque native payloads during import. This is a concrete import-time remote-code-execution chain.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime import/require of devplatform-spa-testing
Impact
Unconsented remote code execution under the importing process user.
Mechanism
Remote binary download, drop, chmod, and detached execution
Attack narrative
The package’s advertised entrypoint silently requires _platform.js. On import, that module retrieves a platform-specific payload from hard-coded worker hosts or reconstructs one via DNS TXT records, saves it under a disguised temporary filename, makes it executable on Unix, and launches it detached through a shell or cmd.exe. The similarly structured telemetry source reinforces that this is deliberate payload delivery rather than normal package functionality.
AI rationale
The declared mock-builder package has no legitimate reason to fetch and execute opaque native payloads during import. This is a concrete import-time remote-code-execution chain.
Evidence
package.jsonindex.js_platform.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>Windows Temp/dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf101-adf.workers.devoob-worker.cf103-070.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf99-9b3.workers.dev
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _platform.js at package import time.
- _platform.js downloads platform-specific binaries from obfuscated worker hosts.
- _platform.js falls back to DNS TXT payload retrieval from wel1.ru domains.
- Downloaded payload is written to /var/tmp or Windows Temp, chmodded, and spawned detached.
- lib/telemetry.js contains the same download-to-temp-and-execute capability.
Evidence against
- package.json has no lifecycle scripts.
- No credential harvesting or AI-agent configuration writes found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
5 flagged · loading sourcelib/telemetry.jsView file
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L125: const _logger = new Logger(
L126: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L127: );
...
L234: "BUILD_NUMBER",
L235: "GITHUB_ACTIONS",
L236: "GITLAB_CI",
...
L285: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L286: device_app_hash: hashString(process.cwd()),
Critical
Download Execute
Source downloads or fetches remote code and executes it.
lib/telemetry.jsView on unpkg · L27504L505: fork() {
L506: const child = new Scope();
High
•matchType = token_shingles
matchedPackage = dolyame-boxy-component-story-name@35.3.3
matchedPath = lib/telemetry.js
matchedIdentity = npm:[redacted]:35.3.3
similarity = 0.896
shingleOverlap = 43
summary = source token shingles overlapped 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.jsFindings
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 devplatform-spa-testing@35.8.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-spa-testing@35.8.6. 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: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.