Checking Installed Software

Created the Monday 11 March 2019. Updated 4 years, 2 months ago.

By determining which software are installed the sandbox can be detected (e.g: Python, Tracer, Debugging Tools, Vmware tools...).

Technique Identifier

U1314

Code Snippets

Description

This code snippet will browse the registry to check installed software.

#include <iostream>
#include <windows.h>

bool EnumInstalledSoftware(void)
{
    HKEY hUninstKey = NULL;
    HKEY hAppKey = NULL;
    WCHAR sAppKeyName[1024];
    WCHAR sSubKey[1024];
    WCHAR sDisplayName[1024];
    WCHAR *sRoot = L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall";
    long lResult = ERROR_SUCCESS;
    DWORD dwType = KEY_ALL_ACCESS;
    DWORD dwBufferSize = 0;

    if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, sRoot, 0, KEY_READ, &hUninstKey) != ERROR_SUCCESS)
    {
        return false;
    }

    for(DWORD dwIndex = 0; lResult == ERROR_SUCCESS; dwIndex++)
    {
        dwBufferSize = sizeof(sAppKeyName);
        if((lResult = RegEnumKeyExW(hUninstKey, dwIndex, sAppKeyName,
            &dwBufferSize, NULL, NULL, NULL, NULL)) == ERROR_SUCCESS)
        {
            //printf(sSubKey, L"%s\\%s", sRoot, sAppKeyName);
            if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, sSubKey, 0, KEY_READ, &hAppKey) != ERROR_SUCCESS)
            {
                RegCloseKey(hAppKey);
                RegCloseKey(hUninstKey);
                return false;
            }

            dwBufferSize = sizeof(sDisplayName);
            if(RegQueryValueExW(hAppKey, L"DisplayName", NULL,
                &dwType, (unsigned char*)sDisplayName, &dwBufferSize) == ERROR_SUCCESS)
            {
                wprintf(L"%s\n", sDisplayName);
            }

            RegCloseKey(hAppKey);
        }
    }

    RegCloseKey(hUninstKey);

    return true;
}

Contributors

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.

Think sandboxing will stop malware? Here's why you're wrong, Apple | Matthew Baxter-Reynolds | The Guardian