Versions (4)
Version DetailsCurrent
Rev: 5 • May 11, 2017, 12:00 PMET MALWARE Jaff Ransomware Checkin
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Jaff Ransomware Checkin"; flow:to_server,established; http.method; content:"GET"; http.host; content:"fkksjobnn43.org"; fast_pattern; http.header_names; content:"|0d 0a|Host|0d 0a 0d 0a|"; endswith; reference:url,blogs.forcepoint.com/security-labs/jaff-enters-ransomware-scene-locky-style; reference:md5,942c6a039724ed5326c3c247bfce3461; classtype:command-and-control; sid:2024288; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_11, deployment Perimeter, malware_family Jaff_Ransomware, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)
May 11, 2017, 12:00 PM
Nov 3, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 30, 2025, 9:36 PM
rules/emerging-malware.rules