Nested function call pattern update

definitions/patterns_iraw.txt

@@ -16,7 +16,7 @@ opendns
 phishtank
 sophos
 surfright
-symantec
+# symantec - removed because already a TLD too so generate many false positives
 
 # SEO poison, pharmacy redirect
 dealonline.su

definitions/patterns_raw.txt

@@ -386,4 +386,11 @@ cGhwOi8vaW5wdXQ=
 explode('?>',$shell
 
 # common mobile agent check in SEO poison scripts
-Array("1207", "3gso", "4thp", "501i", "502i", "503i", "504i", "505i", "506i",
+Array("1207", "3gso", "4thp", "501i", "502i", "503i", "504i", "505i", "506i",
+
+# eval url decoded string
+eval(rawurldecode('
+
+# simple obfuscated function
+'gz'.'unc'.'ompress'
+'create'.'_'.'function'

definitions/patterns_re.txt

@@ -60,7 +60,7 @@ chr\s*\(\s*101\s*\)\s*\.\s*chr\s*\(\s*118\s*\)\s*\.\s*chr\s*\(\s*97\s*\)\s*\.\s*
 
 #Detects the '_' character encoded in a string like "\x5F".  '_' is present in many functions that malware would want to hide.
 # '_' as "\x5f"
-\\[Xx](5[Ff])
+# \\[Xx](5[Ff]) - removed because generate many false positives
 
 #Detects the '_' character placed inside a call to the 'chr()' function
 # '_' as 'chr(95)' or 'chr(0x5f)'
@@ -95,7 +95,7 @@ eval\(\$[a-z0-9_]+\(\$_POST
 ("[a-z0-9]+"\.chr\(\d+\)\.){3,}
 
 # nested function call used variables
-\$[a-z]+\(\$[a-z0-9]+\(
+\$[a-z0-9_]+\(\$[a-z0-9_]+\(
 
 # GLOBALS inject with escaped content
 \$GLOBALS;\$\{"\\x
@@ -135,4 +135,16 @@ explode\('\|\x01\|\x03\|\x03', gzinflate\(
 @header\(\w{3,5}::\w{1,2}\('_\w{1,3}', '_' \. '\w{1,3}' . '\w{1,3}'\)\);
 
 # backdoor reported #72
-@\$[a-z]{1}\[\d+\]\(\$[a-z]{1}\[\d+\]\);
+@\$[a-z]{1}\[\d+\]\(\$[a-z]{1}\[\d+\]\);
+
+# reported #77
+\$[a-z]11 \^ [a-z]8\(\$[a-z]6, \$[a-z]14, \$[a-z]6\[13\]\(\$[a-z]11\)\)\)\);
+
+# eval function return and concat
+eval\([A-Za-z]{5,}\(\) \. '
+
+# eval function return, parameter is a hex string
+eval\([A-Za-z0-9]{5,}\(\"[A-Z0-9]{16,}
+
+# gzip payload called by variable named function
+\$[a-zA-Z0-9]{6,}\('\x78\x9C\xAD\x90\x41\x0E

whitelist.txt

@@ -284,3 +284,5 @@ a54895edc1402cf1b7b5ecd3f5d85e6b wp-includes/formatting.php -> Wordpress Core 6.
 1e2d246c57d2123aa8938c8263cb1d3d wp-content/plugins/wordpress-seo/admin/tracking/class-tracking-server-data.php -> Yoast SEO plugin 19.2
 cacb5670ebb2de31976a4b2eb06cac86 wp-content/plugins/worker/src/MWP/ServiceContainer/Abstract.php -> managewp plugin 4.9.14 from managewp.com
 ffa76b9ff298702a733747521cfdee69 wp-content/plugins/worker/src/MWP/Action/GetState.php -> managewp plugin 4.9.14 from managewp.com
+ccce5f45d1ac66bd2bebe75d666b5720 wp-content/plugins/redirection/models/regex.php
+ae810d74d638c611d8bd958777c9ac6a wp-content/plugins/ssl-insecure-content-fixer/includes/nonces.php