cdf-tag-commander-helpernpm
cdf-tag-commander-helper is a confirmed malicious npm package (MAL-2026-13481) that opens a backdoor for remote access (malicious versions 3.1.1, 3.6.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in cdf-tag-commander-helper (npm)
What this malware does
The preinstall lifecycle script in [email protected] runs automatically on npm install. It executes whoami and hostname, retrieves the machine's public IP via ifconfig.me, and issues a plain-HTTP GET to a hardcoded Interactsh-style out-of-band callback subdomain (kwphewvexhjbtfduscqybx6q7c862eh0g.oast.fun), passing the three values as query parameters. The README states that the package makes no network requests, which contradicts the shipped code. The behavior is a reconnaissance beacon consistent with dependency-confusion targeting: on install, an attacker learns which internal build hosts and user accounts have resolved this package name.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for cdf-tag-commander-helper (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging cdf-tag-commander-helper across your stack and pipelines.
If you installed it — respond
cdf-tag-commander-helper establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If cdf-tag-commander-helper 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 cdf-tag-commander-helper 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks cdf-tag-commander-helper-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.