alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/Sabsik Config Downloader"; flow:established,to_client; http.content_type; content:"text/plain"; http.response_body; content:"|24|url|3d 22|http|3a 2f 2f|"; startswith; content:"|2e|txt|22 3b 0d 0a 24|web|20 3d 20|New|2d|Object|20|System|2e|Net|2e|WebClient|3b|"; distance:0; within:63; fast_pattern; reference:md5,49eb944fb7f86a9d6649c6a190c782e8; classtype:trojan-activity; sid:2034288; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_28, deployment Perimeter, malware_family Win32_Sabsik, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_09;)