alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/ReImageRepair.T CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/protection/"; startswith; http.cookie; content:"user|3d 22|"; startswith; content:"|22 3b 20|city|3d|"; distance:0; fast_pattern; http.header_names; content:"|0d 0a|Cookie|0d 0a|Host|0d 0a 0d 0a|"; bsize:18; reference:md5,39fef85fe114d96dde745b8ce0659b2e; classtype:pup-activity; sid:2038701; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_31, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_31, reviewed_at 2025_10_24;)