""ET WEB_SERVER DEWMODE Webshell Observed Outbound""

SID: 2031650

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Web_Server, created_at 2021_02_23, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_02_23

Reference:

  • md5

  • bdfd11b1b092b7c61ce5f02ffc5ad55a

Protocol: tcp

Source Network: $HTTP_SERVERS

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: ".php?csrftoken="

  • Value: "|22|>Cleanup|20|Shell"

  • Value: "file_id"

  • Value: "path"

  • Value: "file_name"

  • Value: "uploaded_by"

  • Value: "Recipient"

  • Value: "Actions"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source