MacSync Stealer Detection

Wambua Thyaka@thyaka

•updated Aug 19, 2026•23•0•20

MacSync Stealer (formerly known as Mac.c) is a macOS information stealer offered as a Malware-as-a-Service (MaaS). On May 5, 2026, researchers identified a new C2 domain (jacksonvillemma[.]com) delivering the malware's Stage 2 loader. Notably, this new infrastructure was active just days after the operator's previous C2 domain was publicly exposed, highlighting the threat actor's agility in rotating their delivery architecture.