alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (CrazyBro)"; flow:established,to_server; http.user_agent; content:"CrazyBro"; startswith; nocase; reference:url,www.f-secure.com/v-descs/trojan-proxy_w32_kvadr_gen!a.shtml; reference:md5,e4664144f8e95cfec510d5efa24a35e7; reference:md5,fd2d6bb1d2a9803c49f1e175d558a934; classtype:pup-activity; sid:2010333; rev:7; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, updated_at 2024_03_02;)