alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/ArmyOfUkraine Bot Activity"; flow:established,to_server; http.method; content:"GET"; http.request_line; bsize:14; content:"GET / HTTP/1.1"; http.header; content:"accept|3a 20 2a 2f 2a 0d 0a|"; content:"host|3a|"; http.host; content:".ru"; endswith; http.header_names; bsize:18; content:"|0d 0a|accept|0d 0a|host|0d 0a 0d 0a|"; fast_pattern; threshold:type both, seconds 600, count 20, track by_src; reference:md5,62d49fed7c54621b507a02541ee55066; reference:url,twitter.com/GossiTheDog/status/1497681806094737411; classtype:trojan-activity; sid:2035421; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_08, deployment Perimeter, malware_family Win32_ArmyOfUkraine, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;)