MSBuild.exe
Named by 3 kept items in this workspace.
2 items name it under affected products and 1 under tools.
Search every workspace for MSBuild.exe. It matches the name as written, so it can find other things that share it.
The items that name it 3
Legitimate Windows build tool hollowed by the second and third stage-three payloads to run malicious code while importing only kernel32
Legitimate Microsoft binary used for process hollowing to run payloads two and three
Hardcoded alternate injection/proxy execution target observed in live telemetry
All technologies in this workspace.