/global.php
includes/class_core.php
includes/functions.php
includes/version_vbulletin.php

$cronimage = '<img src="' . create_full_url('cron.php?' . $vbulletin->session->vars['sessionurl'] . 'rand=' .  vbrand(1, 1000000)) . '" alt="" width="1" height="1" border="0" />';

$cronimage = '<img src="' . create_full_url('cron.php?' . $vbulletin->session->vars['sessionurl'] . 'rand=' .  TIMENOW) . '" alt="" width="1" height="1" border="0" />';

return md5(TIMENOW . SCRIPTPATH . SESSION_IDHASH . SESSION_HOST . vbrand(1, 1000000));

return md5(uniqid(microtime(), true));

function vbrand($min, $max, $seed = -1)
{
	if (!defined('RAND_SEEDED'))
	{
		if ($seed == -1)
		{
			$seed = (double) microtime() * 1000000;
		}

		mt_srand($seed);
		define('RAND_SEEDED', true);
	}

	return mt_rand($min, $max);
}

function vbrand($min = 0, $max = 0, $seed = null)
{
	mt_srand(crc32(microtime()));

	if ($max AND $max <= mt_getrandmax())
	{
		$number = mt_rand($min, $max);
	}
	else
	{
		$number = mt_rand();
	}
	// reseed so any calls outside this function don't get the second number
	mt_srand();

	return $number;
}

<?php

define('FILE_VERSION_VBULLETIN', '3.7.3 Patch Level 1');

?>