""ET TROJAN JS Sniffer Framework Sending to CnC""

SID: 2025881

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_23, deployment Perimeter, performance_impact Low, signature_severity Major, tag Stealer, updated_at 2018_07_23

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".php?image_id="

  • Value: "Accept"

  • Value: "Accept-"

  • Value: !"Referer"

Within:

PCRE: "/.php\?image_id=(?:[A-Z0-9+/]{4})*(?:[A-Z0-9+/]{2}==|[A-Z0-9+/]{3}=|[A-Z0-9+/]{4})$/Ui"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

source