This number was used for the Chime support campaign for several weeks, starting on Friday, 3 November 2023
8776594753 Microsoft Defender trojan spyware alert was Chime support (ViciDial) (Friday, 3 November 2023) https://dmdemuwin007er089rmg1566.z13.web.core.windows.net/qefdfbgngnkukuykujythsshtjdj/W0in0Sjy0help0secure0761/index.html?phone=
It was reported on this site for the first time here
As is usually the case these numbers are taken out of action but they are persistently coming back after 1-2 days or even a week later until they realize the futility and shut it down completely