alert http $HOME_NET any -> any any (msg:"ET MALWARE [PT MALWARE] Hacked Mikrotik C2 Request"; flow:established, to_server; threshold:type threshold, track by_src, count 1, seconds 35; http.method; content:"GET"; http.uri; content:"/mikrotik.php"; endswith; http.user_agent; content:"Mikrotik/6.x Fetch"; depth:18; endswith; fast_pattern; http.header_names; content:!"Accept"; content:!"Referer"; reference:url,forum.mikrotik.com/viewtopic.php?t=137217; classtype:command-and-control; sid:2026027; rev:5; metadata:created_at 2018_08_23, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_11_19, reviewed_at 2024_02_16;)