alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Backdoor.Win32.RShot Checkin"; flow:established,to_server; content:"connected#"; depth:10; content:"#Windows "; fast_pattern; content:"##"; distance:0; dsize:<120; reference:md5,c0aadd5594d340d8a4909d172017e5d0; classtype:command-and-control; sid:2014268; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, tls_state plaintext, created_at 2012_02_21, deployment Perimeter, deployment Internal, former_category MALWARE, malware_family Backdoor_Win32_RShot, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_12_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel; target:src_ip;)