Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Fireball Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"?clients="; content:"&reqs=visit."; distance:0; http.user_agent; content:"RookIE/"; fast_pattern; startswith; http.header_names; content:!"Accept"; content:!"Referer|0d 0a|"; reference:url,blog.checkpoint.com/2017/06/01/fireball-chinese-malware-250-million-infection; reference:md5,69ffdf99149d19be7dc1c52f33aaa651; classtype:trojan-activity; sid:2024348; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_06_03, deployment Perimeter, malware_family Fireball, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_06;)