alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING [ANY.RUN] DARKCLOUD Style External IP Check"; flow:established,to_server; http.start; bsize:58; content:"GET|20 2f 20|HTTP|2f|1|2e|1|0d 0a|User|2d|Agent|3a 20|Project1|0d 0a|Host|3a 20|showip|2e|net|0d 0a 0d 0a|"; fast_pattern; reference:url,community.emergingthreats.net/t/darkcloud/844; classtype:external-ip-check; sid:2047083; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_08_08, deployment Perimeter, deployment SSLDecrypt, malware_family DarkCloud, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;)