No public, working crack exists for full IC11.x decoding. Private reversing groups (e.g., for warez forums) have partially working tools, but they are never released openly because IonCube aggressively pursues DMCA takedowns. Any "cracked decoder" you download likely contains ransomware or a reverse shell.
In 2023, a fake "IonCube 11 Decoder Pro" was distributed via WordPress plugin repositories. It contained an obfuscated script that added admin users to any WordPress site on the same server. Ioncube Decoder Ic11.x Php 7.4
The "IC" stands for .