""ET TROJAN Suspected Zebrocy Implant CnC Checkin""

SID: 2028906

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 2019_10_25, deployment Perimeter, performance_impact Low, signature_severity Major, tag Zebrocy, updated_at 2019_10_25

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "ID=" Depth: 3

  • Value: "&Disks="

  • Value: "&Files="

  • Value: "&Proc_list="

  • Value: "POST"

  • Value: "|3b 20|charset=65001|20 28|UTF-8|29|"

Within:

PCRE:

Special Options:

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_method

  • http_header

source