alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Tonto_SPM Backdoor CnC Activity"; flow:established,to_server; http.uri; content:"spm=xx{}:>*()_!"; endswith; classtype:trojan-activity; sid:2030990; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_08, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_07;)