alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gameredon Loader Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".html"; endswith; http.user_agent; content:"Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36 OPR/54.0.2952.64|3a 3a|"; startswith; fast_pattern; content:"|3a 3a|"; distance:2; endswith; reference:url,blog.talosintelligence.com/2021/02/gamaredonactivities.html; reference:md5,04490fb43c9adbfdee9d7918e3db0af5; classtype:trojan-activity; sid:2031676; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_02_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_26;)