alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ZuoRAT Windows Loader Shellcode Retrieval"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/api/docs/share/"; startswith; pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}/"; content:"doc_slug="; fast_pattern; content:"from="; reference:url,github.com/blacklotuslabs/IOCs/blob/main/ZuoRAT_IoCs.txt; classtype:targeted-activity; sid:2037142; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_28, deployment Perimeter, deployment SSLDecrypt, malware_family ZuoRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_28;)