""ET INFO Double Extension ZIP File Downloaded from Discord (Request)""

SID: 2035027

Revision: 2

Class Type: unknown

Metadata: attack_target Client_Endpoint, created_at 2022_02_01, deployment Perimeter, deployment SSLDecrypt, signature_severity Informational, updated_at 2022_04_18, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1036, mitre_technique_name Masquerading

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/attachments/" Depth: 13

  • Value: ".zip"

  • Value: ".discordapp.com|0d 0a|"

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+.discordapp.com/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • nocase

  • http_header

  • fast_pattern

source