Which versions of simple-date-formatter-util-11 are malicious?

The following npm versions of simple-date-formatter-util-11 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate simple-date-formatter-util-11 if I installed it?

simple-date-formatter-util-11 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 simple-date-formatter-util-11 — how do I know if it already compromised me?

If simple-date-formatter-util-11 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.

Is simple-date-formatter-util-11 part of a known attack campaign?

Yes — simple-date-formatter-util-11 is associated with the IN-MAL-2026-014429 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 simple-date-formatter-util-11 across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for simple-date-formatter-util-11 (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging simple-date-formatter-util-11 across your stack and pipelines.

Malicious package

simple-date-formatter-util-11npm

simple-date-formatter-util-11 is a confirmed malicious npm package (MAL-2026-12200) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in simple-date-formatter-util-11 (npm)

MAL-2026-12200

Immediate action

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

npm uninstall simple-date-formatter-util-11

What this malware does

Package advertises itself as a trivial date-formatting utility (index.js exports a one-line formatDate wrapper) but ships a package.json postinstall hook that runs on npm install and executes a shell one-liner harvesting installer identity (id, hostname, uname), container and Kubernetes indicators (/proc/1/cgroup, docker.sock, /var/run/secrets/kubernetes.io/serviceaccount/token), capabilities, mounts, network configuration, and environment variables filtered by kube|aws|token|secret|key|pass|role|region|cluster|node|service|container. The aggregated output is POSTed to http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo, an interact.sh/OAST-style callback host. The tarball additionally ships postinstall.js, which reads ~/.ssh directory contents and POSTs a JSON payload (SSH key filenames, username, platform) to a hardcoded IP 124.221.154.135:443/post. The advertised purpose does not match the install-time behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

53f8a19e2cff3bcaf070316f16650d8c1af6714f4c44db56971299ef01c16a25

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for simple-date-formatter-util-11 (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging simple-date-formatter-util-11 across your stack and pipelines.
If you installed it — respond
simple-date-formatter-util-11 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 simple-date-formatter-util-11 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.
How O3 protects you
O3 blocks simple-date-formatter-util-11 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. simple-date-formatter-util-11 on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014429

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks simple-date-formatter-util-11-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

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