alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE Android/SOVA Banking Trojan Activity (number update)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/api?method=number.update&botid="; startswith; fast_pattern; content:"&phoneNumber="; distance:0; http.header_names; content:!"Referer"; reference:url,www.threatfabric.com/blogs/sova-new-trojan-with-fowl-intentions.html; reference:md5,01b6f0220794476fe19a54c049600ab3; classtype:trojan-activity; sid:2033941; rev:3; metadata:created_at 2021_09_14, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_11, reviewed_at 2023_11_14;)