""ET WEB_CLIENT APT/Hafnium SPORTSBALL Webshell Observed Outbound""

SID: 2031812

Revision: 2

Class Type: web-application-attack

Metadata: attack_target Web_Server, created_at 2021_03_04, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_03_04

Reference:

  • md5

  • 1a4ab99bbe9adbe2deb0e4b96d82a955

Protocol: tcp

Source Network: $HTTP_SERVERS

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "logon|3a|"

  • Value: "name=|22|sport|22 20|"

  • Value: "cmd|3a|"

  • Value: "input|20|name=|22|balls|22 20|"

  • Value: "name=|22|woods|22|"

  • Value: "name=|22|sky|22|"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

source