""ET CURRENT_EVENTS Generic Obfuscated Sign In Landing Page 2023-06-22""

SID: 2046621

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_06_22, deployment Perimeter, signature_severity Major, tag Phishing, updated_at 2023_06_22, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information

Reference:

  • md5

  • e73af0d91c496b615ace6c3aa04a4c88

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "\\x0D\\x0A\\x3C\\x68\\x65\\x61\\x64\\x3E\\x0D\\x0A\\x3C\\x74\\x69\\x74\\x6C\\x65\\x3E\\x0D\\x0A\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x53\\x69\\x67\\x6E\\x20\\x69\\x6E\\x20\\x74\\x6F\\x20\\x79\\x6F\\x75\\x72\\x20\\x61\\x63\\x63\\x6F\\x75\\x6E\\x74\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x20\\x3C\\x2F\\x74\\x69\\x74\\x6C\\x65\\x3E\\x0D\\x0A\\x09\\x09\\x09\\x0D\\x0A\\x3C\\x73\\x74\\x79\\x6C\\x65\\x3E\\x0D\\x0A\\x68\\x74\\x6D\\x6C"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source