registry / dolyame-ui-dropdown / 35.6.2

dolyame-ui-dropdown@35.6.2

visual components

AI Security Review

scanned 10d ago · by lpm-firewall-ai

Importing the package triggers a hidden remote binary downloader and launcher. It stages a payload in a temporary directory and executes it detached.

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.

Impact

Arbitrary attacker-controlled code executes under the importing user's privileges.

Mechanism

Remote payload download/DNS staging followed by detached native execution.

Attack narrative

index.js silently imports _helpers.js. Its immediately invoked run() downloads a platform-specific binary from obfuscated worker domains, falling back to DNS TXT chunk reconstruction. It writes the data to a temporary executable path, applies executable permissions on Unix, and starts it detached through /bin/sh or cmd.exe. The package offers no legitimate connection between a dropdown UI component and this behavior.

Rationale

Source establishes a concrete import-time remote payload staging and execution chain, unrelated to the declared UI package. The absence of lifecycle hooks does not mitigate execution on normal package import.

Evidence

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

Network endpoints7

oob-worker.cf101-adf.workers.dev

On require('dolyame-ui-dropdown'), index.js loads _helpers.js which selects a platform-specific endpoint from an obfuscated (split-literal) host list including oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev, and oob-worker.cf100-416.workers.dev, with a DNS-TXT chunked fallback that assembles a base64 payload from c.<domain> and numbered n.<domain> TXT records under dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The downloaded binary is written to /var/tmp or %TEMP% under cover-story names such as.cache_<hex> or dotnet_diag_<hex>.exe, chmodded to 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp+' &']).unref(). Obfuscation includes string-splitting of the child_process require ('child_' + 'process'), array-join reassembly of destination hostnames, and reflective property access such as fs['chmod'+'Sync']. A second dropper stage with the same primitives is shipped in lib/telemetry.js. A package advertised as a UI dropdown has no legitimate reason to fetch and execute platform-specific ELF/Mach-O/EXE payloads at import time.

dolyame-ui-dropdown@35.6.2

AI Security Review

OSV Corroboration

Decision evidence

Source & flagged code

Source & flagged code

Findings

Source & flagged code