Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SvcStealer CNC Tasking Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/svcstealer"; startswith; fast_pattern; http.request_body; content:"tsk|3d|"; startswith; pcre:"/^[A-F0-9]{22}$/R"; reference:md5,06635111468af8497979f05ccd5bc2ea; reference:url,app.any.run/tasks/9a3ecb79-69f5-4fe9-a7ef-ec5535471bcb; classtype:trojan-activity; sid:2061021; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2025_03_21, deployment Perimeter, malware_family SvcStealer, performance_impact Low, confidence High, signature_severity Major, tag InfoStealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1567, mitre_technique_name Exfiltration_Over_Web_Service; target:src_ip;)