Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.BEACON.[CSBundle USAToday Server]"; flow:from_server,established; file.data; content:"{|22|navgd|22 3a 22|<div class=gnt_n_dd_ls_w><div class=gnt_n_dd_nt>ONLY AT USA TODAY:</div><div class=gnt_n_dd_ls><a class=gnt_n_dd_ls_a href=https|3a|//supportlocal.usatoday.com/"; reference:url,github.com/fireeye/red_team_tool_countermeasures; classtype:trojan-activity; sid:2031273; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_08, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2020_12_09, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)