Which versions of simple-date-formatter-util-15 are malicious?

The following npm versions of simple-date-formatter-util-15 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate simple-date-formatter-util-15 if I installed it?

simple-date-formatter-util-15 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-15 — how do I know if it already compromised me?

If simple-date-formatter-util-15 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-15 part of a known attack campaign?

Yes — simple-date-formatter-util-15 is associated with the IN-MAL-2026-011324 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-15 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-15 (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-15 across your stack and pipelines.

Malicious package

simple-date-formatter-util-15npm

simple-date-formatter-util-15 is a confirmed malicious npm package (MAL-2026-11545) 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-15 (npm)

MAL-2026-11545

Immediate action

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

npm uninstall simple-date-formatter-util-15

What this malware does

package.json declares a postinstall shell pipeline that attempts to mknod and mount the host block device at /tmp/hostroot, enumerates /etc/kubernetes and kubelet pods, reads the Kubernetes service-account token at /var/run/secrets/kubernetes.io/serviceaccount/token, lists /home/work/skills/canvas-agent/, dumps /proc/net/arp, and POSTs the collected output via curl to http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo4 (an interactsh OAST subdomain). A companion postinstall.js in the tarball enumerates the installer's ~/.ssh directory, collects filenames alongside os.userInfo(), and POSTs the result over HTTPS to the hardcoded IP 124.221.154.135:443/post. The package's declared purpose ("simple date formatter") has no relationship to reading Kubernetes secrets, host block devices, or SSH keys. Install-time execution of this script harvests container-escape and credential material and ships it to attacker-controlled destinations.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

4f79e44f447b3ebd6b246845f4c31bff0a0fe2e3bc45b220e1a952bf1ddc66bb

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-15 (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-15 across your stack and pipelines.
If you installed it — respond
simple-date-formatter-util-15 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-15 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-15 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-15 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-2026-011324

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks simple-date-formatter-util-15-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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