🛡️ MAL-2026-5912 — js-digest

Malicious code in js-digest (npm)

Source: amazon-inspector

Package impersonates crypto-js: name is js-digest but package.json carries crypto-js's exact description ("JavaScript library of cryptography standards."), homepage http://github.com/brix/js-digest (brix is the crypto-js org), and author "Evan Vosberg" (the crypto-js maintainer). package.json declares "preinstall": "./lib/install-deps.mjs", but lib/install-deps.mjs is not JavaScript — it is a 3.2 MB Linux x86_64 ELF binary (magic 7F 45 4C 46, sha256 7883bda1ff15425f2dbe622c45a3ae105ddfa6175009bbf0b0cad9bf5c79b316). On npm install, npm's preinstall hook executes this native binary with the installer's privileges before any code is reviewed. Strings extracted from the binary show a multi-platform credential harvester: HTTP requests scraping GitHub (GET /user, /user/repos with Authorization: Bearer...), Slack (POST /api/auth.test with Cookie: d=), Discord, Microsoft Teams (/api/mt/*), and HashiCorp Vault (X-Vault-Token, /v1/...); reads of /.vault-token, /.vault/token, gpg --batch --no-tty --list-keys, and /proc/<pid>/{mem,cmdline,environ}; and multipart POST uploads to remote endpoints. The binary also embeds systemd unit templates ([Unit]/[Service]/ExecStart=.../Restart=always) for both system (/etc/systemd/system/) and user (~/.config/systemd/user/) scopes for persistence, plus libbpf rootkit primitives (bpf_object__open_mem, bpf_map__pin, bpf_program__attach, maps hidden_pids/hidden_inodes/hidden_names, /sys/fs/bpf/) for kernel-level concealment from ps/ls/lsof. Installing this package compromises the host with a persistent, hidden credential stealer.