Most genuine cracks will trigger false positives because they modify executable code. However, real malware hides here too.
The term (often misspelled as Fantomel, FantomEl, or Fantom-El) typically appears in forums, torrent sites, and file-sharing platforms as a modified or repackaged version of the Opcom software. Users search for "opcom fantomel download" hoping to find a cracked, updated, or virus-free version of the Opcom firmware and software suite.