alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Related Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/maps/overlaybfpr?q="; startswith; fast_pattern; http.cookie; content:"SRCHD=AF=NOFORM|3b|_SS="; startswith; pcre:"/^[A-Za-z0-9+=/]{172}$/R"; http.user_agent; content:"Mozilla/5.0|20|"; startswith; reference:md5,50b3fb6a2cf209d4bcbea0546e82f58f; reference:url,blog.talosintelligence.com/2022/05/mustang-panda-targets-europe.html; classtype:trojan-activity; sid:2036632; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_05_19, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, tag TA416, updated_at 2022_05_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)