alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Systweak Checkin M2"; flow:established,to_server; http.method; content:"POST"; http.header; content:"SOAPAction|3a 20 22|http://tempuri.org/IsUserAuthenticated|22 0d 0a|"; http.request_body; content:"<sUsername>"; content:"</sUsername><sPassword>"; distance:0; fast_pattern; content:"</sPassword><sMacId>"; distance:0; content:"</sMacId><refno>"; distance:0; reference:md5,cb5de25d798ed63a781926c903317f70; classtype:pup-activity; sid:2034297; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_29;)