alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP OSX/Adware.Pirrit CnC Activity 4"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/exec.tgz"; endswith; fast_pattern; http.user_agent; content:"curl/"; startswith; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,malpedia.caad.fkie.fraunhofer.de/details/osx.pirrit; classtype:pup-activity; sid:2033029; rev:2; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2021_05_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_24;)