From 3aea5b3b3e4da79420037e12e3884d0c30bd92f0 Mon Sep 17 00:00:00 2001
From: Julien "shaddai" Reveret
Date: Thu, 3 Dec 2015 17:51:09 +0100
Subject: added double base64 encoding detection

---
 php-malware-finder/malwares.yara | 1 +
 1 file changed, 1 insertion(+)

diff --git a/php-malware-finder/malwares.yara b/php-malware-finder/malwares.yara
index 8fd5eb5..73195da 100644
--- a/php-malware-finder/malwares.yara
+++ b/php-malware-finder/malwares.yara
@@ -105,6 +105,7 @@ rule DodgyPhp
 {
     strings:
         $vars = /\$__+/ // $__ is rarely used in legitimate scripts
+        $double_encoding = /(base64_decode\s*\(\s*){2}/
         $execution = /(eval|assert|passthru|exec|system|win_shell_execute|base64_decode)\s*\(\s*(base64_decode|php:\/\/input|str_rot13|gz(inflate|uncompress)|getenv|pack|\\?\$_(GET|REQUEST|POST))/
         $basedir_bypass = /(curl_init\([\"']file:[\"']|file:file:\/\/)/
         $safemode_bypass = /\x00\/\.\.\/|LD_PRELOAD/
-- 
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