""ET WEB_SERVER Generic Webshell Password Prompt Accessed on Internal Compromised Server""

SID: 2030542

Revision: 2

Class Type: web-application-attack

Metadata: affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_07_16, deployment Perimeter, signature_severity Critical, updated_at 2020_07_16

Reference:

Protocol: tcp

Source Network: $HTTP_SERVERS

Source Port: $HTTP_PORTS

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "cmd{background-color|3a|"

  • Value: "SCROLLBAR-DARKSHADOW-COLOR|3a|"

  • Value: "<body style=|22|FILTER|3a 20|progid|3a|DXImageTransform.Microsoft.Gradient("

  • Value: "gradientType=0,startColorStr="

  • Value: "<input name='envlpass' type='password'"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

source