alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE AllcomeClipper CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"?cf6zrlhn="; fast_pattern; http.user_agent; content:"YaBrowser/"; content:"Yowser/"; distance:0; reference:md5,79ecd91ebda3816f9dfc118cbdeda9ec; reference:url,twitter.com/3xp0rtblog/status/1486368999919300611; classtype:trojan-activity; sid:2039100; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_10_05, deployment Perimeter, malware_family AllcomeClipper, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_05;)