registry / dwsai-dwsai-core / 35.8.4

dwsai-dwsai-core@35.8.4

base framework module

AI Security Review

scanned 10d ago · by lpm-firewall-ai

Importing the package silently starts an asynchronous remote-payload loader. It fetches or DNS-reconstructs an executable, writes it to a temporary directory, then launches 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

Unconsented arbitrary code execution under the importing user's privileges.

Mechanism

Remote binary download/DNS staging followed by detached execution.

Attack narrative

The public entrypoint loads _adapter.js automatically. Its bootstrap function contacts obfuscated remote hosts for a platform-specific binary, with DNS TXT payload retrieval as fallback. On success it writes the payload to a temp path, makes it executable on Unix, and starts it detached through a shell or cmd.exe, without user action.

Rationale

This is an import-time staged payload loader with remote binary execution, not legitimate telemetry. The absence of lifecycle hooks does not mitigate execution on ordinary package use.

Evidence

package.jsonindex.js_adapter.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_state

Network endpoints8

oob-worker.cf100-416.workers.devoob-worker.cf99-93.workers.dev

On require('dwsai-dwsai-core'), index.js loads _adapter.js which downloads a platform-specific binary from author-controlled Cloudflare Workers mirrors and writes it to /tmp/.cache_<rnd> on Linux/macOS or %TEMP%/dotnet_diag_<rnd>.exe on Windows (masquerading as the Microsoft dotnet diagnostic tool). The file is chmodded 0755 and spawned detached via /bin/sh -c or cmd.exe, with stdio ignored and unref(). The mirror hostnames are reassembled at runtime from split-string arrays (e.g. ['oob-worker.cf100-41','6.worke','rs.de','v'].join('')) rather than appearing as literals, and a DNS-TXT fallback channel fetches a base64 payload chunked across TXT records at c.*.dl.wel1.ru via dns.resolveTxt to bypass HTTPS egress filtering. No hash or signature verification is performed on the downloaded binary. Execution is gated behind DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env checks and a cache-stamp at /tmp/.analytics_state, framed as opt-out telemetry — the masquerade filenames, runtime-assembled destinations, DNS covert channel, and detached-spawn shape are inconsistent with legitimate telemetry.

dwsai-dwsai-core@35.8.4

AI Security Review

OSV Corroboration

Decision evidence

Source & flagged code

Source & flagged code

Findings

Source & flagged code