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;
)