Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Gamaredon Information Stealer Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; pcre:"/^\/[A-Z0-9]{12}$/i"; http.user_agent; content:"Mozilla/1.0"; fast_pattern; startswith; http.content_type; content:"multipart/form-data|3b 20|boundary|3d 2d 2d 2d 2d|"; startswith; pcre:"/^[A-Z0-9]{12}$/Ri"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|p|22|"; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|C|3a 5c|"; reference:url,blog.talosintelligence.com/2022/09/gamaredon-apt-targets-ukrainian-agencies.html; reference:md5,b34760b85a6cfd9f31a05e76fa8589a6; classtype:trojan-activity; sid:2038907; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_09_20, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;)