alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED [ANY.RUN] ZharkBOT HTTP CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"?id="; pcre:"/^[a-f0-9]{32}&/R"; content:"us="; content:"mn="; content:"os=Windows"; content:"bld="; http.user_agent; content:"|a0 28|Windows|a0|NT|a0|10.0|3b a0|Win64|3b a0|x64|29 a0|"; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; reference:md5,1636b0de8dccc7605335f2289b883abc; reference:url,app.any.run/tasks/dbf5e817-75fe-4d88-98a2-3573edf6febc; reference:url,community.emergingthreats.net/t/zharkbot/; classtype:trojan-activity; sid:2050279; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2024_01_22, deployment Perimeter, former_category MALWARE, malware_family ZharkBOT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_17, reviewed_at 2025_04_17; target:src_ip;)