""ET TROJAN SpyAgent C&C Activity (Response)""

SID: 2034574

Revision: 2

Class Type: attempted-admin

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_01, deployment Perimeter, signature_severity Major, updated_at 2021_12_01

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "|21|lexec|3b|http" Depth: 11

  • Value: "|2e|exe"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source