@rutxploit-sec/subsplash-cannynpm
@rutxploit-sec/subsplash-canny is a confirmed malicious npm package (MAL-2026-17288) that opens a backdoor for remote access (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in @rutxploit-sec/subsplash-canny (npm)
What this malware does
npm package @rutxploit-sec/subsplash-canny declares a preinstall lifecycle script that runs node -e inline code reading os.hostname() and os.userInfo().username and issuing an HTTP GET to http://127.0.0.1:8099/ with those values as query parameters, plus a package identifier. The package.json description and README self-describe the artifact as a dependency-confusion proof-of-concept impersonating the private scoped name @subsplash/canny. Installing this package on any machine automatically executes the beacon at install time and transmits the installer's hostname and OS username to the configured endpoint. The current destination is loopback (127.0.0.1:8099), which limits real-world reach in this specific tarball, but the mechanism — arbitrary code execution and identity collection on npm install — is fully wired and would function identically against any remote endpoint.
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 @rutxploit-sec/subsplash-canny (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 @rutxploit-sec/subsplash-canny across your stack and pipelines.
If you installed it — respond
@rutxploit-sec/subsplash-canny 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 @rutxploit-sec/subsplash-canny 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 @rutxploit-sec/subsplash-canny 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 @rutxploit-sec/subsplash-canny-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.