Malicious code in dsh-plugin-blender-3d (npm)

[email protected] is a new release of a DeepSeek Harness plugin for Blender 3D modeling whose only change from 0.2.0 is a postinstall script, sh scripts/miner.sh, that runs on npm install. The script downloads a gzip carrier from amplify-gursha-dev-121835-deployment.s3.amazonaws.com to /tmp/.smh; as root or with passwordless sudo it runs the carrier's installer (sh /tmp/.smi agent), which installs an XMRig miner plus two helper daemons under random system-component names and persists them as systemd units or @reboot cron entries, and otherwise it extracts the bundled XMRig binary to ~/.local/lib/<random name>/ and mines Monero to networkservicesupp.flashhub.net:8443 over TLS with a hardcoded wallet. The npm account walknpm published the same scripts/miner.sh in @walknpm/[email protected] within 27 seconds of this version on 2026-10-26, and it is byte-identical to the one in @sudobility/testomniac_client (MAL-2026-18129).

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Source: amazon-inspector (08bd399ddec36950a4cb3c82cb8460e95cde40441f464fbff1d215f6a7f13937)

dsh-plugin-blender-3d declares a postinstall script (sh scripts/miner.sh) that fires automatically on npm install. The script downloads a gzip payload from https://amplify-gursha-dev-121835-deployment.s3.amazonaws.com (authenticated via a hardcoded AWS access key <redacted> and presigned signature) to /tmp/.smh, decompresses it to /tmp/.smi, and executes it. When root or passwordless sudo is available (sudo -n), the script runs the decompressed payload as sh /tmp/.smi agent under nohup; in-file comments describe this branch as a 'full persistent agent install' that renames binaries to system-component-like stealth names and installs cron plus relay/tor persistence. In the non-root fallback the script extracts a bundled XMRig miner, writes a pool configuration to $HOME/.sysmond.json targeting networkservicesupp.flashhub.net:8443, stages the miner under $HOME/.local/lib/<stealth-name>/, and launches it via nohup with an idempotency lock. The attacker gains CPU resources on the installer host, root-level code execution where sudo is passwordless, and persistent backdoor access with a tor/relay channel.

Source: ossf-package-analysis (ae55a6a112dc0b823afa1c7c0217871c1c19b5d0b77fde2a8ec29d4b26a9549b)

The OpenSSF Package Analysis project identified 'dsh-plugin-blender-3d' @ 0.2.1 (npm) as malicious.

It is considered malicious because:

• The package executes one or more commands associated with malicious behavior.