Crashing DR client when a process sets Trap flag

Created by: secrary

Some malware changes page protection to PAGE_NOACCESS and executes a code from the code, which causes to trigger a handler, usually, the handler is registered beforehand and the handler just changes protection back to RX (or RWX) and continues execution.

When a process is under DR client, the client crashes with EXCEPTION_ACCESS_VIOLATION error instead of passing the exception to the process and continue execution.

*more about the trick: https://secrary.com/Random/anti_re_simple/