Here are a few tricks that I have discovered over my malware development journey:

• Encrypt and change permissions of your payload and modules if there are not in use.
• EDRs scans RWX memory pages, try to RW PAGE_READWRITE -> RX PAGE_EXECUTE_READ.
• Use the APIs closest to kernel, produce less telemetry.
• Obfuscate all the calls.
• Duplicate handles instead of create new ones.
• Inject from noisy contexts like SYSTEM or csrss.exe.
• The idea of evasion consists of being invisible by being common.