alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Bumblebee Loader User-Agent (bumblebee)"; flow:established,to_server; http.user_agent; bsize:9; content:"bumblebee"; fast_pattern; reference:md5,555b77d23549e231c8d7f0b003cc5164; reference:md5,3f34d94803e9c8bc0a9cd09f507bc515; reference:url,www.cynet.com/orion-threat-alert-flight-of-the-bumblebee/; reference:url,blog.google/threat-analysis-group/exposing-initial-access-broker-ties-conti/; classtype:trojan-activity; sid:2036237; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_04_18, deployment Perimeter, deployment SSLDecrypt, malware_family Bumblebee_Loader, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26;)