Which versions of lynx-keeper-cli are malicious?

The following npm versions of lynx-keeper-cli are flagged malicious: 0.1.0, 0.1.1. Treat any of these as compromised.

How do I remediate lynx-keeper-cli if I installed it?

lynx-keeper-cli 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.

I already installed lynx-keeper-cli — how do I know if it already compromised me?

If lynx-keeper-cli was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is lynx-keeper-cli part of a known attack campaign?

Yes — lynx-keeper-cli is associated with the IN-MAL-2026-004157, IN-MAL-2026-004158, GHSA-3p5r-gmr8-v7mr campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find lynx-keeper-cli across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for lynx-keeper-cli (2 malicious versions).

Malicious package

lynx-keeper-clinpm

Advisory published May 22, 2026Updated May 26, 2026

lynx-keeper-cli is a confirmed malicious npm package (MAL-2026-4604) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in lynx-keeper-cli (npm)

MAL-2026-4604

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall lynx-keeper-cli

What this malware does

lynx-keeper-cli ships a heavily obfuscated payload in dist/index.js that runs at require() time. After a CI-evasion gate that aborts when CI/GITHUB_ACTIONS/GITLAB_CI/JENKINS_URL/CIRCLECI/TRAVIS/CODEBUILD/TF_BUILD/VERCEL/NETLIFY env vars are present, the module reads installer-owned secrets in bulk: ~/.aws/credentials, ~/.aws/config, ~/.ssh/id_rsa, ~/.ssh/id_ed25519, ~/.ssh/config, ~/.kube/config, ~/.docker/config.json, ~/.npmrc, ~/.gitconfig, ~/.config/gcloud/* (including application_default_credentials.json and access_tokens.db),.env/.env.local/.env.production from CWD, /proc/self/environ, /var/run/secrets/**, and iterates /home/* for other users' copies. It additionally queries cloud instance metadata services — AWS IMDSv1/IMDSv2 (169.254.169.254/latest/meta-data/iam/security-credentials/ with X-aws-ec2-metadata-token-ttl-seconds PUT flow), ECS container credentials at 169.254.170.2, GCP metadata.google.internal (Metadata-Flavor: Google), and Azure IMDS at 169.254.169.254/metadata/instance — to steal short-lived workload credentials. Harvested data is JSON-stringified, AES-128-GCM encrypted with a hardcoded key 'npm-keepertoolse', and POSTed over HTTPS with rejectUnauthorized:false to https://72.62.71.201/api/v2/collect (the IP is built from a char-code array to evade static scanners). The package also drops a persistent backdoor to ~/.npm/_npx/.cache/gyp-rebuild/index.js (and the Windows %APPDATA% equivalent) with a fake package.json; the dropped script polls 72.62.71.201/api/v2/beacon every 45-90 seconds and runs server-issued AES-encrypted commands via child_process.execSync, also supporting READ:<path>, FETCH:<url>, ENV, and KILL control verbs. The package's README is the unedited 'YOUR-PACKAGE-NAME' template; the exported checkNativeCrypto/validate helpers are decoy cover. Targets the DeFi keeper-operator audience whose hosts hold wallet keys and signer secrets.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

2 flagged

0.1.00.1.1

Indicators of compromise (SHA-256)

03b5568df006e26ed01f2e16635d290f7de439153f6a699a31e53898ad0a0bdc

9cebbf0e6cc5a35eea6e6869d295d072526b6ff7d566c49bc80f15952138cf88

86f7d8e73e5ca8d18f9f3401c8e0decae3d8e0780d5808a9332ff85c2a59acb9

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for lynx-keeper-cli (2 malicious versions).
If you installed it — respond
lynx-keeper-cli 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.
Did it already run?
If lynx-keeper-cli was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. lynx-keeper-cli on npm has been identified as a malicious package (versions 0.1.0, 0.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-004157IN-MAL-2026-004158GHSA-3p5r-gmr8-v7mr

References

Credits

Amazon Inspector · finder

Detect & block this

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

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database