Versions (4)
Version DetailsCurrent
Rev: 7 • Apr 21, 2017, 12:00 PMET MALWARE Unknown Possibly Ransomware (Dropped by RIG) CnC Beacon
alert http $HOME_NET any -> $EXTERNAL_NET !80 (msg:"ET MALWARE Unknown Possibly Ransomware (Dropped by RIG) CnC Beacon"; flow:established,to_server; urilen:1; http.method; content:"POST"; http.header; content:"Accept|3a 20|*|0d 0a|"; fast_pattern; http.request_body; content:"|0a|"; offset:64; depth:1; pcre:"/^[A-Za-z0-9+/]{64}\x0a/"; http.content_type; content:"application/octet-stream"; bsize:24; http.header_names; content:!"Referer|0d 0a|"; reference:md5,26b21902548e3b821387c90d729bace6; classtype:command-and-control; sid:2024233; rev:7; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_04_21, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2020_10_09, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)
Apr 21, 2017, 12:00 PM
Oct 9, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules