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

SID: 2029939

Revision: 2

Class Type: web-application-attack

Metadata: affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_04_17, deployment Perimeter, signature_severity Critical, updated_at 2020_04_17

Reference:

Protocol: tcp

Source Network: $HTTP_SERVERS

Source Port: $HTTP_PORTS

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "<meta name=|22|Description|22 20|content=|22|Mr.Rm19"

  • Value: ">Time On Server : <font color="

  • Value: ">Server IP : <font color="

  • Value: ">Current Dir : <a href="

  • Value: ">Mass Deface"

Within:

PCRE:

Special Options:

  • file_data

  • nocase

  • nocase

  • nocase

  • nocase

  • nocase

  • fast_pattern

source