PayDay is a financially motivated ransomware group known for deploying several variants of ransomware, first emerging around April 2016. This group primarily leverages ransomware strains that encrypt victim files and demand cryptocurrency payments for decryption. PayDay has been observed utilizing various underlying ransomware projects, including Hidden Tear, CryptXXX, and BTCWare, with evolving tactics like changing ransom note formats and file extensions over time. Their operations are characterized by the direct monetization of compromised systems through extortion.