alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Gamaredon Payload Request (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".jpeg"; endswith; pcre:"/^(?:\/[a-z]{3,4}\/[a-z]{3,8}\/\d{2}\.\d{2}\/[a-z]+\.jpeg)$/"; http.header_names; bsize:76; content:"|0d 0a|Accept|0d 0a|Accept-Language|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; fast_pattern; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; reference:md5,70af922cba39f7db068f23f72d436b9d; reference:url,twitter.com/Cyber0verload/status/1638987820357369856; classtype:trojan-activity; sid:2044761; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_24, deployment Perimeter, malware_family Win32_Gamaredon, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;)