What programs exist for creating memory dumps of running applications?

Question

Programming

I know that it is possible to create a complete dump of a running application.
Is it possible to make a dump not entirely, but of individual fragments of memory that the application has allocated for itself?
That is, let's say the program has started, allotted itself 10 fragments of 1 MB each through malloc / calloc.
Here's how to dump the program and 10 fragments into separate files?
Is it something like Sysinternals Process Explorer?
Is it possible to develop such a program for dumps yourself?
For Win9x there was some book about the internals, but for Win7 there isn't.

Answer 1

Here's how to dump the program and 10 fragments into separate files?
Is it possible to develop such a program for dumps yourself?

Keywords: CreateProcess / OpenProcess to create/open an existing process, VirtualQueryEx to view the memory areas allocated by the process and ReadProcessMemory to read data from the desired memory areas.

Answer 2

Any debugger. For example IDA.

Answer 3

Look for PETools or PEDump .