SMSW

Stores the machine status word into the destination operand.

Technique Identifiers

Evasion Categories

Sandbox Evasion

Code Snippets

#include <iostream>

using namespace std;

void smsw()
{
	unsigned int reax = 0;

	__asm
	{
		mov eax, 0xCCCCCCCC
		smsw eax
		mov DWORD PTR[reax], eax
	}

	if ((((reax >> 24) & 0xFF) == 0xcc) && (((reax >> 16) & 0xFF) == 0xcc))
	{
	    cout << "VM detected!" << endl;
	}
}

int main()
{
    smsw();
    cout << "Hello world!" << endl;
    return 0;
}

About Author Open Snippet

Author: Thomas Roccia (fr0gger) / Target Platform: Windows

Additional Resources

External Links

The resources provided below are associated links that will give you even more detailed information and research on current evasion technique. It is important to note that, while these resources may be helpful, it is important to exercise caution when following external links. As always, be careful when clicking on links from unknown sources, as they may lead to malicious content.

Anti-VM - Bletchley Park

Created

March 11, 2019

Last Revised

March 24, 2026