Versions (4)
Version DetailsCurrent
Rev: 4 • Nov 18, 2019, 12:00 PMET MALWARE Observed Buran Ransomware UA
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Buran Ransomware UA"; flow:established,to_server; http.user_agent; content:"fuck u"; nocase; bsize:6; http.header_names; content:!"Referer"; classtype:command-and-control; sid:2028991; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_18, deployment Perimeter, confidence Medium, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_27, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)
Nov 18, 2019, 12:00 PM
Oct 27, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 22, 2025, 9:34 PM
rules/emerging-malware.rules