alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE WikiLoader Activity M3 (GET)"; flow:established,to_server; flowbits:set,ET.wikiloader; http.method; content:"GET"; http.uri; content:".php?id=1"; endswith; http.header_names; strip_pseudo_headers; to_lowercase; content:"|0d 0a|accept|0d 0a|cookie|0d 0a|"; startswith; content:!"|0d 0a|referer|0d 0a|"; http.user_agent; content:"|3b 20|yie10|3b 20|"; fast_pattern; reference:md5,c5b76423675f8ef473225a753f0ce626; reference:url,securityintelligence.com/x-force/wailingcrab-malware-misues-mqtt-messaging-protocol/; classtype:trojan-activity; sid:2049274; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_11_21, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_27; target:src_ip;)