""ET TROJAN APT Lazarus Nukesped Downloader""

SID: 2031207

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_16, deployment Perimeter, signature_severity Major, updated_at 2020_11_16

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: ".asp"

  • Value: "fn=" Depth: 3

  • Value: ".gif&code="

  • Value: "Accept-Language|3a 20|ko-KR|3b|q="

Within:

PCRE: "/^fn=[^&]*.gif&code=\d+$/Pi"

Special Options:

  • http_method

  • http_uri

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • fast_pattern

  • http_header

source