alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Onestart AI Program Version Checkin (POST)"; flow:established,to_server; urilen:1; http.method; content:"POST"; http.uri; content:"/"; http.host; bsize:15; content:"log.onestart.ai"; fast_pattern; http.request_body; content:"|7b 22|action|22 3a 22|"; startswith; content:"|22 2c 22|iid|22 3a 22|"; distance:0; content:"|22 2c 22|name|22 3a 22|"; distance:0; content:"|22 2c 22|oldver|22 3a 22|"; distance:0; content:"|2c 22|ver|22 3a 22|"; distance:0; content:"|22 2c 22|wver|22 3a 22|"; distance:0; reference:url,community.emergingthreats.net/t/sigs-onestartai-pua/2422; reference:md5,1d599092628613f06912ec455ca61f96; classtype:pup-activity; sid:2059956; rev:2; metadata:affected_product Windows_Server_2025, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_02_07, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Adware, updated_at 2025_06_02, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1496, mitre_technique_name Resource_Hijacking;)