alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE VBA/Agent.ADT Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/campaigns.php?user="; startswith; fast_pattern; content:"&machine="; distance:0; http.header_names; content:"|0d 0a|Connection|0d 0a|Accept|0d 0a|Accept-Language|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; startswith; reference:md5,7880b133993f6e880a665a87346dc9e8; classtype:trojan-activity; sid:2039765; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_09, deployment Perimeter, malware_family VBA_Agent_ADT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_09, reviewed_at 2024_12_24;)