Which versions of simple-date-formatter-util-12 are malicious?

The following npm versions of simple-date-formatter-util-12 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate simple-date-formatter-util-12 if I installed it?

simple-date-formatter-util-12 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-12 — how do I know if it already compromised me?

If simple-date-formatter-util-12 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-12 part of a known attack campaign?

Yes — simple-date-formatter-util-12 is associated with the IN-MAL-2026-014430 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-12 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-12 (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-12 across your stack and pipelines.

Malicious package

simple-date-formatter-util-12npm

simple-date-formatter-util-12 is a confirmed malicious npm package (MAL-2026-12201) 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-12 (npm)

MAL-2026-12201

Immediate action

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

npm uninstall simple-date-formatter-util-12

What this malware does

package.json declares a postinstall script that, on npm install, collects installer reconnaissance (id, hostname, uname, cgroups, docker.sock, Linux capabilities, the Kubernetes service-account token at /var/run/secrets/kubernetes.io/serviceaccount/token, mounts, network config, ARP, PID1 cmdline, and environment variables filtered for kube/aws/token/secret/key/pass/role/region/cluster) and POSTs the collected data over plain HTTP to a Project Discovery interact.sh subdomain (http://ycrqyyjhwepdmhjifyccxss1hrks8lcd2.oast.fun/escinfo). The tarball also ships postinstall.js which enumerates the user's ~/.ssh directory and POSTs the contents plus username/platform to a hardcoded IP (https://124.221.154.135/post). The advertised functionality is a one-line formatDate wrapper around toLocaleDateString in index.js, which serves only as a cover for the malicious install-time payload.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

cdd747d615be16a4af8508b6151d829c49f8ba2e1d045b8c1cbc9d8f2f219de9

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-12 (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-12 across your stack and pipelines.
If you installed it — respond
simple-date-formatter-util-12 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-12 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-12 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-12 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-2026-014430

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks simple-date-formatter-util-12-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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