""ET TROJAN BlueNoroff APT Related Activity M2 (POST)""

SID: 2049883

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_01_02, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2024_01_29

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: !"|2e|"

  • Value: "|20 28|unknown version|29 20|"

  • Value: !"User|2d|Agent|3a 20|nbp|20|"

  • Value: "|22 3a 22|Version|20|"

  • Value: "Content-Type|3a 20|application/json|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+Darwin\//Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

  • nocase

  • http_client_body

  • http_header

  • http_header

source