alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Sventore.B CnC Checkin"; flow:established,to_server; http.request_line; content:"POST / "; http.user_agent; content:"DownloadMR|2f|"; startswith; fast_pattern; content:"|3b 20|m|3d|"; distance:0; content:"|3b 20|u|3d|"; distance:0; content:"aurora|29|"; endswith; http.header_names; content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; startswith; reference:md5,0b14251c628fa7b8f7effc092acfbed0; classtype:trojan-activity; sid:2043455; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_01_23, deployment Perimeter, malware_family Win32_Sventore_B, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03, reviewed_at 2024_12_24;)