alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Variant.Babar.74963 CnC Exfil"; flow:established,to_server; http.method; content:"GET"; http.header_names; content:"sys|0d 0a|p|0d 0a|c|0d 0a|user-agent|0d 0a|u|0d 0a|token"; fast_pattern; threshold:type limit, seconds 30, count 1, track by_src; reference:url,twitter.com/malwrhunterteam/status/1574822973298671616; reference:md5,d74c346206d98d7816d42f03c29d6ae5; classtype:trojan-activity; sid:2039019; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_28, deployment Perimeter, deprecation_reason Age, malware_family Win32_Variant_Babar_74963, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_02, reviewed_at 2024_12_02;)