alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET 13180 (msg:"ET ADWARE_PUP Win32/Pearfoos.B!ml Checkin"; flow:established,to_server; content:"|fa e5 f9 fe 8a 85 c9 c6 c3 cf c4 de 85 c6 c5 cd c3 c4 95 dc cf d8 97|"; startswith; fast_pattern; reference:md5,9f52d77ef7287902c0fe86b92ea9078b; classtype:pup-activity; sid:2044452; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_06;)