Icebox is a Virtual Machine Introspection solution that enable you to stealthily trace and debug any process (kernel or user). It's based on project Winbagility.
Files which might be helpful:
A full getting started was written here.
If your using a Windows guest you might want to set the environement variable _NT_SYMBOL_PATH to a folder that contains your guest's pdb. Please note that icebox setup will fail if it does not find your guest's kernel's pdb.
vm_resume just pause then resume your VM.
cd icebox/bin/$ARCH/ ./vm_resume <vm_name>
nt_writefile breaks when a process calls ntdll!NtWriteFile, and dumps what's written in a file on your host in the current directory.
cd icebox/bin/$ARCH/ ./nt_writefile <vm_name> <process_name>
heapsan breaks ntdll memory allocations from a process and add padding before & after every pointer. It is still incomplete and doesn't do any checks yet.
cd icebox/bin/$ARCH/ ./heapsan <vm_name> <process_name>
wireshark breaks when ndis driver reads or sends network packets and creates a wireshark trace (.pcapng). Each packet sent is associated to a callstack from kernel land to userland if necessary.
cd icebox/bin/$ARCH/ ./wireshark <name> <path_to_capture_file>