""ET CURRENT_EVENTS Inbound JS with Possible 1px-1px Exfiltration Image""

SID: 2027817

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_08_07, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, tag CardSkimmer, updated_at 2019_08_07

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "document.createElement|28 22|"

  • Value: ".width=|22|1px|22|"

  • Value: ".height=|22|1px|22|"

  • Value: "atob|28 22|aHR0cHM6Ly9"

Within: 100

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source