alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Suspected Blackmoon Related Activity (Response)"; flow:established,to_client; flowbits:isset,ET.blackmoon; http.cookie; content:"lofter.com"; fast_pattern; file.data; content:"a63855"; content:"a6"; distance:14; within:3; reference:md5,26e28b0d5e50624d2597ae65cdd41dd5; reference:md5,f2827328571b9c292a1a3759e94c7b4a; reference:md5,53d082f3320b5c6cfd264d1b30298094; reference:url,threatpost.com/blackmoon-banking-trojan-using-new-infection-technique/125425/; classtype:trojan-activity; sid:2046636; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_06_23, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_23; target:dest_ip;)