alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Bumblebee Loader Related Download Activity (GET)"; flow:established,to_server; urilen:10; http.method; content:"GET"; http.uri; content:"/w_ver.dat"; bsize:10; fast_pattern; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; http.header_names; content:!"Referer|0d 0a|"; content:!"User-Agent|0d 0a|"; reference:md5,017e6b2df70f70f41c4e9ce6527925a2; classtype:trojan-activity; sid:2051782; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_25, deployment Perimeter, malware_family Win32_Bumblebee, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_25; target:src_ip;)