alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Win32/Fabookie.ek CnC Request M4 (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/check/safe"; fast_pattern; bsize:11; reference:url,twitter.com/Gi7w0rm/status/1648666723346776067; reference:url,tria.ge/230419-m1ptwaaa68; classtype:trojan-activity; sid:2045057; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_04_19, deployment Perimeter, former_category MALWARE, malware_family Fabookie, performance_impact Low, confidence High, signature_severity Major, tag Fabookie, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30; target:src_ip;)