alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE PunkeyPOS HTTP CnC Beacon 8"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/?action="; fast_pattern; content:"&uid="; content:"&bit="; content:"&version="; http.header_names; to_lowercase; content:!"|0d 0a|accept-"; content:!"|0d 0a|referer|0d 0a|"; reference:url,trustwave.com/Resources/SpiderLabs-Blog/New-POS-Malware-Emerges---Punkey/; reference:md5,aa87ab0c51887b86b48c009931dcc410; classtype:command-and-control; sid:2021167; rev:5; metadata:attack_target Client_Endpoint, created_at 2015_05_29, deployment Perimeter, signature_severity Major, tag c2, updated_at 2024_04_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)