""ET TROJAN OSX/iWebUpdate CnC Activity""

SID: 2044206

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2023_02_15, deployment Perimeter, performance_impact Significant, signature_severity Major, tag c2, updated_at 2023_02_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: ".php?v="

  • Value: "&c="

  • Value: "&os="

  • Value: "&hw="

Within:

PCRE: "/.php\?v=\d+&c=[^&]+&u=[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}&os=/U"

Special Options:

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

source