alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Korplug.HQ CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/"; bsize:1; http.user_agent; content:"Mozilla|2f|4|2e|0 |28|compatible|3b| MSIE 8|2e|0|3b| Windows NT 5|2e|1|3b| Trident|2f|4|2e|0|3b| |2e|NET CLR 2|2e|0|2e|50727|3b| |2e|NET CLR 3|2e|0|2e|4506|2e|2152|3b| |2e|NET CLR 3|2e|5|2e|30729|29|"; bsize:127; http.accept; content:"application|2f|riscos|2c|multipart|2f|x|2d|mixed|2d|replace|2c|application|2f|zip|2c|multipart|2f|form|2d|data|2c|application|2f|x|2d|www|2d|form|2d|urlencoded|2c|application|2f|msword|2c|application|2f|vnd|2e|music|2d|niff|2c|application|2f|fractals|2c2a2f2a|"; fast_pattern; http.content_len; content:"0"; bsize:1; reference:url,twitter.com/kienbigmummy/status/1557762252870385664; classtype:trojan-activity; sid:2038493; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_11, deployment Perimeter, malware_family Win32_Korplug_HQ, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_11, reviewed_at 2025_10_24;)