alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE DCRAT Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?"; content:"&"; pcre:"/^(?:[a-f0-9]{2}){16}=(?:[a-f0-9]{2}){16}&(?:[a-f0-9]{2}){16}=(?=[a-z0-9A-Z]{0,48}[A-Z][a-z][A-Z][a-z][A-Z])/R"; http.header_names; content:"|0d 0a|Accept|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:56; fast_pattern; reference:url,twitter.com/James_inthe_box/status/1448751827046985746; reference:md5,60cf8c1093d596a44dc997d00caae463; classtype:trojan-activity; sid:2034194; rev:3; metadata:attack_target Client_Endpoint, created_at 2021_10_15, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_12;)