typescriptt-cli

{"modified":"2026-08-18T23:20:22Z","published":"2026-08-18T23:20:22Z","schema_version":"1.7.4","id":"MAL-2026-14151","summary":"Malicious code in typescriptt-cli (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (023f754538f603fbb5379ee8be82cb9524f710495e5dddc4e631e5aafbf323b5)\ntypescriptt-cli is a typosquat of typescript-cli whose index.js is an empty module; its only real behavior is in scripts/postinstall.js. On npm install, the postinstall script XOR-decodes a hardcoded byte array with key 'stf2026' to reconstruct a URL pointing at github.com/bebraz1/qPzM50V1AKG0rVlH/releases/download/null/main.exe, downloads that Windows executable to %TEMP%\\main.exe, and spawns it detached with windowsHide:true and stdio:'ignore'. When the host is WSL (detected by scanning /proc/version and /proc/sys/kernel/osrelease for 'microsoft'), the script assembles a powershell.exe command from three additional XOR-obfuscated byte arrays and passes it to child_process.exec to fetch and run the same binary on the Windows host, breaking out of the WSL boundary. Before the drop, the script POSTs a JSON platform label to a hardcoded bare-IP install-tracking endpoint at http://193.70.34.101:20099/vote. The download URL uses a personal GitHub account with the release tag literally 'null', no hash or signature verification is performed, and the executable payload is opaque.\n","affected":[{"package":{"ecosystem":"npm","name":"typescriptt-cli"},"versions":["1.0.0"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"scripts/postinstall.js","sha256":"9c81289ea095aa745f5d06b9533c9f28df4b746dc445cec227f99dbeb1b2672e","tlsh":"00d13fca1ef59035874bf96884cf9d13b2a6c207320e4a65ff8f42107f5793c85a69e9"}],"package_integrity":[{"filename":"typescriptt-cli-1.0.0.tgz","hashes":{"sha1":"84bbe977113c01c09f65996ba8accd4e275628dd","sha512_sri":"sha512-0hCqGG2Dcj5JqLbJ+WCP3Z6CwDEqz8n0XfZaCLfWq+4Re7xDPNLpnxVKuNj3hFE9430WJsF4zScrvDXp223jQg=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/typescriptt-cli/v/1.0.0"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-018185","import_time":"2026-08-18T23:41:21.966609459Z","modified_time":"2026-08-18T23:20:22Z","sha256":"023f754538f603fbb5379ee8be82cb9524f710495e5dddc4e631e5aafbf323b5","source":"amazon-inspector","versions":["1.0.0"]}]}}