alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/SecVerif.Downloader Initial Checkin"; flow:established,to_server; http.uri; content:"/atp.txt"; fast_pattern; http.header; content:"Accept-Language|3A| de-at"; http.user_agent; content:"Mozilla/4.0 (compatible|3B| Win32|3B| WinHttp.WinHttpRequest.5)"; reference:url,anubis.iseclab.org/?action=result&task_id=19f379c075627c7b44d0a0db154394f63; classtype:command-and-control; sid:2016329; rev:6; metadata:created_at 2013_02_01, signature_severity Major, updated_at 2024_04_07;)