Many "crack" websites bundle this patcher with infostealers. Once executed, the patcher unpacks a secondary payload that scrapes saved passwords from browsers (Chrome, Edge, Firefox), cookies, and cryptocurrency wallets.
Official IDM updates from Tonec Inc. are named like idman642build17.exe or idmupdt.exe , not Patch-IDM-6.4x-18.1.exe . This naming pattern strongly suggests an unofficial patch. Patch-IDM-6.4x-18.1.exe
Some versions of Patch-IDM-6.4x-18.1.exe generate a hashed key that passes the offline check but would fail an online validation. Many "crack" websites bundle this patcher with infostealers