MAL-2026-10501 Malicious code in filewisee (npm)

The package presents itself as a date-formatting utility and re-exports plausible date APIs (format, formatISO, formatDate, formatTime) from dist/index.js, but also exports formatd from dist/file.js. When formatd is invoked, it fetches an opaque binary from the anonymous file host pixeldrain.com (https://pixeldrain.com/u/byLkaSJR), writes the bytes to ~/.drc/dr, chmods the file 0o755, and spawns it with caller-supplied args using stdio:'ignore' and windowsHide:true so the child process is hidden. There is no hash or signature verification on the downloaded binary, the host is anonymous and unrelated to the publisher, the download target is unrelated to date formatting, and the binary is staged in a hidden dot-directory under the user's home. The cover-story API surface (formatd named to blend with format/formatDate/formatTime) increases the chance consumers invoke the dropper believing it is a date helper.

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.