This analysis discusses the emergence of a new macOS malware family called 'Cuckoo Stealer', which acts as an infostealer and spyware. It describes Cuckoo Stealer's main features, logic, and provides indicators of compromise to assist threat hunters and defenders. The malware employs techniques like obfuscation, scraping admin passwords, and installing persistence mechanisms. Although attempts were made to conceal its behavior, analysis reveals similarities with other recent infostealers targeting macOS devices. SentinelOne's Singularity XDR platform detects and prevents the execution of Cuckoo Stealer, protecting customers from this emerging threat.