alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/PlagueBot User-Agent"; flow:established,to_server; http.user_agent; bsize:9; content:"PlagueBot"; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,2142ed343d1020dca9dec439933c1877; classtype:trojan-activity; sid:2033100; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_07, deployment Perimeter, malware_family Win32_PlagueBot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12;)