Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE PshellBkdr C2 Traffic Known Authorization Bearer in HTTP Request (POST)"; flow:established,to_server; http.method; content:"POST"; http.header; content:"|0d 0a|Authorization|3a 20|Bearer|20|56e620b9e45120dfd1c534aee0b10c9eb3fc3948e7564cda3313a2ed456706e8|0d 0a|"; nocase; fast_pattern; reference:url,medium.com/walmartglobaltech/unknown-powershell-backdoor-with-ties-to-new-zloader-88ca51d38850; classtype:trojan-activity; sid:2054750; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_07_29, deployment Perimeter, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)