Probably this report.
SILICON LIFELINE : WESTERN ELECTRONICS AT THE HEART OF RUSSIA’S WAR MACHINE
JAMES BYRNE, GARY SOMERVILLE, JOE BYRNE, JACK WATLING, NICK REYNOLDS AND JANE BAKER
AUGUST 2022
Most of these components are really common to be honest. And if you put together all the purchases of ICs they are probably just a couple million USD in IC sales. This publication is also kind of sparse on analysis of Russian ICs, in fact it is quite amateurish. And it talks about use of things Texas Instruments DSPs. But Russia has had its own DSPs since like the late 1990s like ELVEES Multicore with Elcore DSP. Or the NeuroMatrix DSP family.