alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/ugearupload/"; startswith; fast_pattern; http.header_names; content:"|0d 0a|Accept|0d 0a|UA-CPU|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; startswith; reference:md5,eabd8a4a9e89f86e617da9b24c25dcee; classtype:trojan-activity; sid:2039000; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_26, reviewed_at 2024_12_24;)