alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Android Nexus Banking Botnet Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri.raw; content:"//api/?param="; startswith; fast_pattern; content:"&value="; distance:0; content:"&botid="; distance:0; content:"&method=bots.update&access="; distance:0; http.header_names; content:!"Referer"; reference:md5,d4c6871dbd078685cb138a499113d280; reference:url,www.virusbulletin.com/blog/2023/10/new-paper-nexus-android-banking-botnet-compromising-cc-panels-and-dissecting-mobile-appinjects/; classtype:command-and-control; sid:2048893; rev:1; metadata:attack_target Mobile_Client, created_at 2023_10_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_24, reviewed_at 2023_10_24; target:src_ip;)