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Malicious package

cryptodao-backendnpm

cryptodao-backend is a confirmed malicious npm package (MAL-2026-5966) that steals credentials and exfiltrates sensitive data (malicious version 99.99.99). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in cryptodao-backend (npm)

MAL-2026-5966
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall cryptodao-backend

What this malware does

package.json declares postinstall: node recon.js, which auto-runs on npm install. recon.js (lines 30-46) scrapes a curated list of credential-bearing environment variables including AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, NPM_TOKEN, CI_REGISTRY_PASSWORD, GITLAB_ACCESS_TOKEN, SSH_PRIVATE_KEY, PRIVATE_KEY, MNEMONIC, and DB_PASSWORD. It additionally enumerates and reads.env files at multiple paths outside the package's own scope (.env, ../.env, /app/.env, /home/gitlab-runner/.env, /root/.env), filtering lines matching /KEY|SECRET|TOKEN|PASS|PRIVATE|MNEMONIC/i. The collected JSON payload is POSTed (recon.js:84-87, 99-106) over HTTPS with rejectUnauthorized:false to two attacker-controlled endpoints: https://webhook.site/d6d18927-e513-4df7-b019-58bfc64fe0dd and https://enqoojbegdvxj.x.pipedream.net/. The package self-describes as the "CryptoDAO internal cryptodao-backend module" and is published at version 99.99.99 — the canonical dependency-confusion shape designed to outrank a private internal package of the same name during npm resolution. A source comment in recon.js explicitly labels itself a "Dependency Confusion Reconnaissance Payload."

The OpenSSF Package Analysis project identified 'cryptodao-backend' @ 99.99.99 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged
99.99.99

Indicators of compromise (SHA-256)

53a8a16fe6b574758e079eb66c47dc1dd063043bb38dd8e1534d357d43509270
2dbe5f8614a264a8d3cdd2ecf8ecd2ad17292dbb5c5bcc25d0ae9d77eb8821df

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for cryptodao-backend (version 99.99.99). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging cryptodao-backend across your stack and pipelines.

  2. If you installed it — respond

    cryptodao-backend is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If cryptodao-backend was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks cryptodao-backend before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. cryptodao-backend on npm has been identified as a malicious package (version 99.99.99 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006862

References

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks cryptodao-backend-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

cryptodao-backend (npm) malicious package — MAL-2026-5966 | O3 Security