""ET WEB_SERVER BlackSquid JSP Webshell Outbound""

SID: 2027433

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Web_Server, created_at 2019_06_04, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2019_06_04

Reference:

Protocol: tcp

Source Network: $HTTP_SERVERS

Source Port: $HTTP_PORTS

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "<|25 25|java.io.InputStream|20|" Depth: 25

  • Value: "Runtime.getRunetime|28 29|.exec|28|request"

  • Value: ".getInputStream|28 29 3b|int|20|"

Within: 50

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source