Versions (4)
Version DetailsCurrent
Rev: 1 • Sep 8, 2022, 12:00 PMET MALWARE Win32/Qbot CnC Activity M3 (POST)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Qbot CnC Activity M3 (POST)"; flow:established,to_server; http.request_line; content:"POST|20|/t5|20|HTTP/1.1"; bsize:17; fast_pattern; http.accept; content:"application/x-shockwave-flash, image/gif, image/jpeg, image/pjpeg, */*"; bsize:70; http.request_body; pcre:"/^[A-Za-z0-9]{3,20}=(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/si"; http.header_names; content:!"Referer"; reference:md5,da51dd657868bf4d2924b4398e045b27; classtype:command-and-control; sid:2038776; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_09_08, deployment Perimeter, deployment SSLDecrypt, malware_family Qbot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_08;)
Sep 8, 2022, 12:00 PM
Sep 8, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 1, 2025, 8:35 PM
rules/emerging-malware.rules