alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Win32/MagicRAT Additional Payload URI M1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/board/mfcom1.gif"; bsize:17; fast_pattern; http.header_names; content:!"Referer"; reference:url,blog.talosintelligence.com/2022/09/lazarus-magicrat.html; reference:md5,b4c9b903dfd18bd67a3824b0109f955b; classtype:trojan-activity; sid:2038767; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_07, deployment Perimeter, former_category MALWARE, malware_family MagicRAT, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17, reviewed_at 2024_09_17;)