""ET TROJAN Cknife Shell Command Struct Inbound (aspx)""

SID: 2022977

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Web_Server, created_at 2016_07_20, deployment Datacenter, performance_impact Low, signature_severity Major, updated_at 2016_07_20

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST"

  • Value: "User-Agent|3a 20|Java" Depth: 16

  • Value: "=Response.Write" Depth: 18

  • Value: "eval"

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_header

source