Versions (3)
Version DetailsCurrent
Rev: 2 • Aug 9, 2022, 12:00 PMET HUNTING HTTP POST Request XOR Key a1
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING HTTP POST Request XOR Key a1"; flow:established,to_server; content:"|f1 ee f2 f5 81 8e|"; startswith; fast_pattern; content:"|81 e9 f5 f5 f1 8e|"; distance:0; classtype:misc-activity; sid:2038379; rev:2; metadata:attack_target Client_and_Server, created_at 2022_08_09, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_10, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)
Aug 9, 2022, 12:00 PM
Aug 10, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 1, 2025, 8:35 PM
rules/emerging-hunting.rules