diff --git a/pafish/qemu.c b/pafish/qemu.c
index 8e1798c..f17074a 100644
--- a/pafish/qemu.c
+++ b/pafish/qemu.c
@@ -6,63 +6,10 @@
 #include "types.h"
 
 int qemu_reg_key1() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "Identifier", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "QEMU") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", "Identifier", "QEMU");
 }
 
 int qemu_reg_key2() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "SystemBiosVersion", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "QEMU") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", "SystemBiosVersion", "QEMU");
 }
+
diff --git a/pafish/utils.c b/pafish/utils.c
index 4bab7f0..0023774 100644
--- a/pafish/utils.c
+++ b/pafish/utils.c
@@ -16,15 +16,33 @@ inline int pafish_exists_regkey(HKEY hKey, char * regkey_s) {
 		return TRUE;
 	}
 	else
+		return FALSE;
+}
+
+inline int pafish_exists_regkey_value_str(HKEY hKey, char * regkey_s, char * value_s, char * lookup) {
+	HKEY regkey;
+	LONG ret;
+	DWORD size;
+	char value[1024];
+
+	size = sizeof(value);
+	ret = RegOpenKeyEx(hKey, regkey_s, 0, KEY_READ, &regkey);
+	if (ret == ERROR_SUCCESS) {
+		ret = RegQueryValueEx(regkey, value_s, NULL, NULL, (BYTE*)value, &size);
+		RegCloseKey(regkey);
+		if (ret == ERROR_SUCCESS) {
+			int i;
+			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
+				value[i] = toupper(value[i]);
+			}
+			if (strstr(value, lookup) != NULL)
+				return TRUE;
+		}
+	}
 	return FALSE;
 }
 
 inline int pafish_exists_file(char * filename) {
-	DWORD ret;
-
-	ret = GetFileAttributes(filename);
-	if (ret != INVALID_FILE_ATTRIBUTES)
-	return TRUE;
-	else
-	return FALSE;
+	return (GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES) ? TRUE : FALSE;
 }
+
diff --git a/pafish/utils.h b/pafish/utils.h
index 83a84a9..ada5a68 100644
--- a/pafish/utils.h
+++ b/pafish/utils.h
@@ -4,6 +4,8 @@
 
 inline int pafish_exists_regkey(HKEY hKey, char * regkey);
 
+inline int pafish_exists_regkey_value_str(HKEY, char *, char *, char *);
+
 inline int pafish_exists_file(char * filename);
 
 #endif
diff --git a/pafish/vbox.c b/pafish/vbox.c
index 57bcb6b..c0a8761 100644
--- a/pafish/vbox.c
+++ b/pafish/vbox.c
@@ -15,68 +15,14 @@
 * SCSI registry key check
 **/
 int vbox_reg_key1() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "Identifier", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "VBOX") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", "Identifier", "VBOX");
 }
 
 /**
 * SystemBiosVersion registry key check
 **/
 int vbox_reg_key2() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "SystemBiosVersion", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "VBOX") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", "SystemBiosVersion", "VBOX");
 }
 
 /**
@@ -90,34 +36,7 @@ int vbox_reg_key3() {
 * VideoBiosVersion key check
 **/
 int vbox_reg_key4() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "VideoBiosVersion", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "VIRTUALBOX") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\Description\\System", "VideoBiosVersion", "VIRTUALBOX");
 }
 
 /**
@@ -169,21 +88,7 @@ int vbox_reg_key9(int writelogs) {
 * HARDWARE\\DESCRIPTION\\System SystemBiosDate == 06/23/99
 **/
 int vbox_reg_key10() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\DESCRIPTION\\System", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "SystemBiosDate", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			if (!strcmp(value, "06/23/99"))
-				return TRUE;
-		}
-	}
-	return FALSE;
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\DESCRIPTION\\System", "SystemBiosDate", "06/23/99");
 }
 
 /**
@@ -371,3 +276,4 @@ int vbox_processes(int writelogs) {
 	} while (Process32Next(hpSnap, &pentry));
 	return res;
 }
+
diff --git a/pafish/vmware.c b/pafish/vmware.c
index 2a2d788..a27eacf 100644
--- a/pafish/vmware.c
+++ b/pafish/vmware.c
@@ -7,34 +7,7 @@
 #include "utils.h"
 
 int vmware_reg_key1() {
-	HKEY regkey;
-	LONG retu;
-	char value[1024];
-	DWORD size;
-
-	size = sizeof(value);
-	retu = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", 0, KEY_READ, &regkey);
-	if (retu == ERROR_SUCCESS) {
-		retu = RegQueryValueEx(regkey, "Identifier", NULL, NULL, (BYTE*)value, &size);
-		if (retu == ERROR_SUCCESS) {
-			int i;
-			for (i = 0; i < strlen(value); i++) { /* case-insensitive */
-				value[i] = toupper(value[i]);
-			}
-			if (strstr(value, "VMWARE") != NULL) {
-				return TRUE;
-			}
-			else {
-				return FALSE;
-			}
-		}
-		else {
-			return FALSE;
-		}
-	}
-	else {
-		return FALSE;
-	}
+	return pafish_exists_regkey_value_str(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0", "Identifier", "VMWARE");
 }
 
 int vmware_reg_key2() {