alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Sephora Related Activity (POST)"; flow:established,to_server; http.request_line; content:"POST //update.svc?action="; startswith; fast_pattern; http.header_names; strip_pseudo_headers; to_lowercase; content:"|0d 0a|cache-control|0d 0a|connection|0d 0a|pragma|0d 0a|"; startswith; content:!"|0d 0a|referer|0d 0a|"; reference:md5,fc4106f71cdcdf6d6fab5441a6c6d7fb; classtype:trojan-activity; sid:2039016; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_09_28, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Sephora, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26;)