Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Brute Ratel CnC Activity (xml-c2) M1"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/previous-versions/windows"; bsize:26; http.user_agent; content:"Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|6|2e|3|3b 20|Trident|2f|7|2e|0|3b 20|rv|3a|11|2e|0|29 20|like|20|Gecko"; bsize:61; http.content_type; content:"application|2f|xhtml|2b|xml"; bsize:21; http.header_names; content:!"Referer"; http.request_body; content:"|3c 3f|xml|20|version|3d 22|1|2e|0|22 3f 3e 0d 0a 3c|batch|3e 0d 0a|"; startswith; fast_pattern; content:"|3c|add|20|id|3d 22|tt0484562|22|"; distance:0; reference:url,ruteratel.com/tabs/ratelserver/c4profiles/; classtype:trojan-activity; sid:2038841; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_15, deployment Perimeter, deprecation_reason Age, malware_family BrutalRatel, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_02, reviewed_at 2024_12_02;)