alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/DownloadAdmin Activity"; flow:established,to_server; http.uri; content:"install|3f|"; nocase; content:"country|3d|"; nocase; http.user_agent; content:"Tightrope Bundle Manager"; nocase; http.header_names; content:"|0d 0a|x|2d|webinstallcode|0d 0a|"; nocase; content:"|0d 0a|x|2d|exename|0d 0a|"; nocase; content:"|0d 0a|x|2d|webinstallurl|0d 0a|"; nocase; threshold:type limit, track by_src, seconds 180, count 1; reference:md5,36d8c484882c961b2f351bb4c73536e1; classtype:trojan-activity; sid:2033709; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_08_11, deployment Perimeter, malware_family Win32_DownloadAdmin, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_11;)