alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT DSLink 260E Router DNS Changer Exploit Attempt"; flow:established,to_server; http.uri; content:"/action?dns_status=1&dns_poll_timeout="; fast_pattern; content:"&id="; distance:0; content:"&dns_serv_ip_1="; distance:0; content:"&dns_serv_ip_2="; distance:0; content:"&dns_serv_ip_3="; distance:0; content:"&dns_serv_ip_4="; distance:0; content:"&priority=1&cmdadd=add"; endswith; reference:url,csirt.bank.gov.ua/en/news/44; classtype:attempted-admin; sid:2027908; rev:8; metadata:attack_target Client_Endpoint, created_at 2019_08_23, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2022_03_24, reviewed_at 2024_04_22;)