diff --git a/rules/malware.txt b/rules/malware.txt
index 9c8d02d..841a147 100644
--- a/rules/malware.txt
+++ b/rules/malware.txt
@@ -7823,3 +7823,4 @@
 /zzz48.com/
 /zzz888.com/
 /zzzcv.com/
+/c1.biz/
\ No newline at end of file