alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Scieron Retrieving Information"; flow:established,to_server; flowbits:set,ET.Trojan.Scieron.Ret; urilen:7; http.method; content:"GET"; http.uri; content:"/ip.txt"; fast_pattern; http.header_names; to_lowercase; content:!"|0d 0a|accept"; content:!"|0d 0a|referer|0d 0a|"; reference:url,symantec.com/connect/blogs/scarab-attackers-took-aim-select-russian-targets-2012; reference:md5,a36db258d0f6f085e8e5030d8e9a9bf4; classtype:trojan-activity; sid:2020296; rev:6; metadata:created_at 2015_01_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29;)