alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO Redirect to MSP360 Software Download Request M2"; flow:established,to_client; http.stat_code; content:"302"; http.location; content:"|2f 4d 42 53 25 32 30 53 6f 75 72 63 65 2f 4d 75 6c 74 69 42 72 61 6e 64 73 2f|"; content:".exe"; distance:0; http.header; content:"content-security-policy"; nocase; content:"mspbackups.com"; fast_pattern; distance:0; reference:url,msp360.com/msp-software; reference:url,attack.mitre.org/techniques/T1219/; classtype:misc-activity; sid:2067115; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, affected_product Windows_8, affected_product Windows_10, affected_product MSP360, attack_target Client_Endpoint, created_at 2026_01_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag RAT, tag RemoteAccessTool, updated_at 2026_02_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1219, mitre_technique_name Remote_Access_Software;)