alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Worm.VBS Dunihi/Houdini/H-Worm Checkin UA"; flow:to_server,established; http.user_agent; content:"|3c 7c 3e|"; fast_pattern; content:"|3c 7c 3e|"; distance:0; reference:md5,d2e799904582f03281060689f5447585; reference:url,www.menlosecurity.com/hubfs/pdfs/Menlo_Houdini_Report%20WEB_R.pdf; classtype:command-and-control; sid:2017994; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2014_01_22, deployment Perimeter, malware_family Houdini, malware_family H_worm, performance_impact Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;)