diff --git a/definitions/patterns_re.txt b/definitions/patterns_re.txt
index 2e9ebe8..8d68511 100644
--- a/definitions/patterns_re.txt
+++ b/definitions/patterns_re.txt
@@ -133,3 +133,6 @@ explode\('\|\x01\|\x03\|\x03', gzinflate\(
 # backdoor reported #71
 @header\(\w{3,5}::\w{1,2}\('_\w{1,3}' \. '\w{1,3}', '_\w{1,3}'\)\);
 @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}\[\d+\]\);
\ No newline at end of file