Qulab was recently discovered utilizing YouTube videos to promote a bitcoin generator tool that promises to generate free bitcoins for its users. This scam is pushing Qulab information-stealing and clipboard hijacking malware. As users and videos are reported, the videos are taken down; however, threat actors can create new users and videos.
June 2019: Security researcher provides a technical analysis of Qulab. (Bleeping Computer)
Image Source: Bleeping Computer