ARP tablet content over and over again

Hi!
i just got notifications that my MAC address is changing from …-26-4a to …26-4b Over and Over again. it changes 1-10 times every 5 min?
i rebooted my router,
i did a virus scan, nothing,
i did a malware scan, found this

Trojan.BlockAV, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\FIREWALLRULES|{60905F87-8E12-4DD6-B4E7-19E40A1D87EC}

"Delete-on-Reboot" rebooted, scanned, Clean, still the mac is changing over and over again, checked if there was some suspicious data going up or down, didn’t find anything…

Thank you for your time :wink:

anyone got any idea of why this is?

On your network do you have a router behind a router or anything else unusual? I saw something like this once and it was caused by an incorrectly configured network that caused devices to keep switching MAC addresses.