""ET TROJAN nspps Backdoor - Task Response""

SID: 2030110

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Linux, attack_target Client_Endpoint, created_at 2020_05_05, deployment Perimeter, signature_severity Major, updated_at 2020_11_12

Reference:

  • md5

  • 435716b4f56cf94fdb7f6085dced41e5

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "404"

  • Value: "|62 37 55 14 af 59 9f 28 ab 34|" Depth: 10

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source